1、- FF-N-83bE = 9999974 0165575 332 = FF-N-836E 14 September 1994 SUPERSEDING 24 April 1972 FF-N-836D FEDERAL SPECIFICATION NUT: SQUARE, HEXAGON, CAP, SLOTTED, CASTLE, KNURLED, WELDING AND SINGLE BALL SEAT This specification was approved by the Commissioner, Federal Supply Service, General Services Ad
2、ministration, for the use of all Federal agencies. 1. SCOPE AND CLASSIFICATION 1.1 Scope. This specification covers cap, castle, hexagon, knurled, slotted, square, welding and single ball seat nuts (see 6.3). 1.2 Classification. 1.2.1 Twes and stvles. Nuts shall be of the following types and styles
3、(see 6.2, fig. 1). Type I - Nuts, square (fig. 1). Style 1 - Regular. Style 2 - Heavy. Style 3 - Machine screw. Type II - Nuts, hexagon (fig. 1). Style 4 - Plain. Style 5 - Jam. Style 6 - Thick. Style 7 - Flat. Style 8 - Flat jam. Style 9 - Heavy flat. Style 10 - Iieavy flat jam. Style 11 - Heavy. S
4、tyle 12 - Heavy jam. Style 13 - Machine screw. Type III - Nuts, cap (fig. 1). Style 14 - High crown. Style 15 - Low crown. Beneficial comments (recommendations, additions, deletions) any pertinent data which may be of use in improving this document should be addressed to: Defense Industrial Supply C
5、enter, DISC-EPP, 700 Robbins Avenue, Philadelphia, PA 191 11-5096 by using the self-addressed Standardization Document Improvement Proposal D Form 1426) appearing at the end of this document or by letter. AMSC NIA FSC 5310 DISTRTBUTION STATEMENT A. Approved for public release; distribution is unlimi
6、ted. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FF-N-836E Type IV - Nuts, slotted (fig. 1). Style 16 - Plain. Style 17 - Thick. Style 18 - Heavy. Type V - Nuts plain, castle (fig. 1). Type VI1 - Nuts, plain, knurled (fig. 1). Type VI11 - Nuts, w
7、elding (fig. 1). Style 19 - Without pilot. Style 20 - Pilot. Type IX - Nuts, plain, single ball seat, hexagon (fig. 1). 1.2.2 m. Nuts shall be of the sizes specified in ANSI B18.2.2 and B18.6.3, except for weld, cap. knurled and slotted nuts, which shall be in accordance with the applicable Military
8、 standards (see 3.1.1.1 and 3.1.4). Single ball seat nuts shall be of the size specified (see 6.2). 2. APPLICABLE DOCUMENTS 2.1 Government documents 2.1.1 Specifications, handbooks, and standards. Unless otllcnvise specified. issues of referenced documents are those in effect at the time of solicita
9、tion. Information regarding the latest issue of government documents and adopted non-government documents can be obtained from the Department of Defense Index of Specifications and Standards. Federal Specifications: QQ-A-22516 - Aluminum Alloy Bar, Rod, and Wire; Rolled, Drawn, or Cold Finished, 202
10、4. QQ-N-28 1 - Nickel-Copper-Alloy Bar, Plate. Rod, Sheet, Strip, Wire, Forging, and Structural and Special Shaped Sections. QQ-N-286 - Nickel-Copper-Aluminum Alloy, Wrought. QQ-N-290 - Nickel Plating (Electrodeposited). QQ-P-35 - Passivation Treatments for Austenitic, Ferritic, and Martensitic Corr
11、osion-Resisting Steel (Fastening Devices). QQ-P-4 16 - Plating, Cadmium (Electrodeposited). QQ-S-763 - Steel Bars, Wire, Shapes, and Forgings, Corrosion-Resisting. Federal Standards: FED-STD-H28 - Screw-Thread Standard for Federal Services FED-STD-H28/2 - Screw-Thread Standard for Federal Services F
12、ED-STD-H28/20 - Screw-Thread Standard for Federal Services FED-STD-66 - Steel: Chemical Composition and Hardenabilily. (Activities outside of the Federal Government may obtain copies of Federal Specifications. Standards. and Handbooks as outlined under General Information in the Index of Federal Spe
13、cifications and Standards and at the prices indicated in the Index. The Index, which includes cumulative monthly supplements as issued, is for sale 011 a subscription basis by the Superintendent of Documents, U. S. Government Printing Offce, Washington, DC 20402.) 2 Provided by IHSNot for ResaleNo r
14、eproduction or networking permitted without license from IHS-,-,-I . FF-N-836E 9999974 0365577 305 FF-N-836E (Single copies of this specification and other product specifications required by activities outside the Federal Government for bidding purposes are available without charge from Business Ser
15、vice enters at the General Services Administration Regional Offices in Boston, New York, Washington, DC, Atlanta, Chicago, Kansas City, MO, Fort Worth, Denver, San Francisco, Los Angeles, and Seattle, WA.) (Federal Government activities may obtain copies of Federal Specifications, Standards, and Han
16、dbooks and the Indes of Federal Specifications and Standards from established distribution points in their agencies.) Military Specifications: MIL-F-495 - Finish, Chemical, Black, for Copper Alloys. MIL-H-6088 - Heat Treatment of Aluminum Alloys, MIL-1-6870 - Inspection Requirements, Non-destructive
17、 for Aircraft Materials and Parts, MIL-A-8625 - Anodic Coatings, for Aluminum and Aluminum Alloys. MIL-C-13924 - Coating. Oside, Black for Ferrous Metals. DOD-P-16232 - Phosphate Coatings, Heavy, Manganese or Zinc Base (for Ferrous Metals). MIL-C-81562 - Coatings. Cadmium. Tin-Cadmium and Zinc (Mech
18、anically Deposited). Military Standards: MIL-STD-109 MIL-STD-4 10 MIL-STD-13 12 MIL-STD-13 12-6 MIL-STD-6866 MIL-STD-45662 MS16994 MS24679 MS24680 MS27 127 MS27128 MS35692 - Quality Assurance Terms and Definitions. - Nondestructive Testing Personnel Qualification and Certification - Fasteners. Test
19、Methods. - Fasteners, Test Methods, Method 6, Hardness, - Inspection. Liquid Penetrant - Calibration Systems Requirements. - Nut, Plain, Knurled. - Nut, Plain. Cap, High Crown, UNC-2B and UNF-2B. - Nut, Plain. Cap. Low Crown, UNC-2B and W-2B. - Nut. Plain, Welding - without Pilot. - Nut. Plain, Weld
20、ing - Pilot. - Nut. Slotted, Hexagon. Militarv Handbook: (Copies of Military Specifications and Standards required by suppliers in connection with specific Procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications. Unless
21、otherwise specified. issues of referenced documents are those in effect at the time of solicitation. Information regarding the latest issue of non-government documents not adopted by the govcrnnlent can be obtained from the organization responsible for their publication. American Society of Mechanic
22、al Engineers (ASME): ANSVASME B 1.1 - Unified Inch Screw Thread. ANSI/ASME B18.2.2 - Square and Hex Nuts. ANSVASME B18.6.3 - Slotted and Recessed Head Machine Screws and Machine Screw Nuts. ANSVASME B18.18.2M - Inspection and Quality Assurance for High Volume Machine Assembly Fasteners. Application
23、for copies should be addressed to the American Society of Mechanical Engineers. 345 East 47th Street. New York, New York 10017.) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FF-N-836E American Society for Testing and Materials (ASTM): A 108 A 15
24、3 A 309 A 484 I A 484M A 582 A 630 B 16 B 21 B361 B 36M B 98 B 99 B 105 B 117 B 121 I B 121M B 124 B 138 B 154 B 283 B 633 D 3951 D 4066 E 172 E 376 E 427 E 498 E 515 E 1282 E 1444 F 1469 F 1470 F 812 I F 812M G 47 G 69 - Steel Bars, Carbon, Cold-Finished, Standard Quality - Standard Specification f
25、or Zinc Coating (HOT-DIP) on Iron and Steel Hardware. - Standard Test Method for Weight and Composition of Coating on Long Terne Sheet by the Triple-Spot Test. - Standard Specification for General Requirements for Stainless and Heat Resisting Steel Bars, - Standard Specification for Free-Machning St
26、ainless and Heat Resisting Steel Bars, Hot-Rolled or - Standard Test Method for Determination of Tin Coating Weight for Hot-Dip and Electrolytic Tin - Standard Specification for Free-Cutting Brass Rod, Bar, and Shapes for Use in Screw Machines. - Standard Specification for Naval Brass Rod, Bar and S
27、hapes. - Standard Specification for Brass Plate, Sheet, Strip and Rolled Bar. - Standard Specification for Copper-Silicon Alloy Rod, Bar, and Shapes. - Standard Specification for Copper-Silicon Alloy Wire for General Purposes. - Standard Specification for Hard-Drawn Copper Alloy Wires for Electric C
28、onductors. - Standard Test Method of Salt Spray (Fog) Testing. - Standard Specification for Leaded Brass Plate, Sheet, Strip and Rolled Bar. - Standard Specification for Copper and Copper Alloy Forging Rod, Bar, and Shapes. - Standard Specification for Manganese Bronze Rod, Bar, and Shapes. - Standa
29、rd Test Method for Mercurous Nitrate Test for Copper and Copper Alloys. - Standard Specification for Copper and Copper Alloy Die Forgings. - Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel. - Practice For Commercial Packaging. - Standard Specification for Nylon Injecti
30、on and Extrusion Materials. - Standard Practice for Describing and Speclfying the Excitation Source in Emission - Standard Practice for Measuring Coating Thickness by Magnetic-Field or Eddy-Current - Standard Practice for Testing for Leaks Using the Halogen Leak Detector. - Standard Test Method for
31、Leaks Using the Spectrometer Leak Detector or Residual Gas Analyzer - Standard Test Method for Leaks Using the Bubble Emission Techniques. - Standard Guide for Specrtjling the Chemical Compositions and Selecting Sampling Practices and - Standard Practice for Magnetic Particle Examination. - Standard
32、 Guide for Conducting Reproducibility Studies on Test Equipment for Non- - Guide for Fastener Sampling for Specified Mechanical Properties in Performance Inspection. - Standard Specification for Surface Discontinuities of Nuts. - Standard Test Method for Determining Susceptibility to Stress Corrosio
33、n Cracking of High- - Standard Practice for Measurement of Corrosion Potentials of Aluminum Alloys. Billets, and Forgings. Cold-Finished. Plate. Spectrochemical Analysis. (Electromagnetic) Test Methods. in the Tracer Probe Mode. Quantitative Analysis Methods for Metals and Alloys. Destructive Testin
34、g. Strength Aluminum Alloy Products. (Application for copies should be addressed to American Society for Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19 103 .) 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FF-N-836E 3. REQU
35、IREMENTS 3.1 Materials. 3.1.1 Steel, carbon or low allov. Unless othenvise specified(see 6.2), material for carbon steel nuts shall conform in chemical composition to Table III. Unless othenvise specified (see 6.2), Grade A nuts shall be furnished. When specified (see 6.2), carbon steel nuts shall c
36、onform in chemical composition to Table IV. For proof-load requirements see 3.3. 3.1.1.1 Steel, carbon or low allov (Nuts. welding,). Steel welding nuts, type VIII, styles 19 and 20 shall be made from steel which meets the material and proof-load requirements of MS27127 and MS27128 (see 6.2). 3.1.2
37、Corrosion-resistant steel. Corrosion-resisting steel nuts shall be made from materials of the 300 series (302, 303, 304, 305, 316, 321 and 347) and 400 series (410, 414 and 416) as specified (see 6.2), in conformance with the chemical composition requirements of Fed.Std.No. 66 and the mechanical pro
38、perty requirements of QQ-S-763, ASTM A 484 or ASTM A 582, as applicable. The 300 series nuts shall be condition A and shall have an ultimate tensile strength of 75,000 psi min. The 400 series nuts shall be condition T or H and shall have an ultimate tensile strength of 100,000 psi min. For proof loa
39、d requirements see 3.3. 3.1.3 Non-ferrous materials. When specified (see 6.2), nuts shall be made from the following non-ferrous materials. 3.1.3.1 Brass. Naval brass shall be in accordance with ASTM B 21, ASTM B 124, or ASTM B 283. alloy no. 464, half-hard or alloy no. 462, hard, and shall have an
40、ultimate tensile strength of 60,000 psi min. Leaded no forging crack extends into the tapped hole beyond the first full thread; and the width of any forging crack does not exceed 0.008 inch plus 0.010D, where D is the nominal nut size in inches. Forging cracks located at the intersection of the top
41、or bottom face with the flat are permitted provided that the width does not exceed 0.010 inch plus 0.020D, where D is the nominal nut size in inches. TABLE I. Limits of depths on laps, seams, inclusions and forging cracks of nuts. Thread size of nut Depth limits Thread size of nut Depth limits (Inch
42、) .O25 1.4375 and over .O17 .625 .o22 1.250 .O16 .5625 .o22 1.125 .O14 SOO .o22 1.000 .o12 .4375 .o22 375 .o1 1 .375 .o19 .750 ,010 .3 125 and under (Inch) (Inches) (Inch) 3.9 Decarburization. The decarburization limits of the bars from which the non-corrosion-resistant steel nuts are to be made sha
43、ll not exceed the values specified in table II (See 4.5.8). 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FF-N-836E TABLE II. Decarburization limits Complete Complete Thread size plus partial decarburization (Inches) (Max. in inches) decarburizat
44、ion (Max. in inches) Hot Rolled Bars Up to SOO incl. Over ,500 to ,750 incl. Over .750 to 1.000 incl. Over 1.000 to 1.500 incl. Over 1.500 to 2.000 incl. Over 2.000 to 2.500 incl. Over 2.500 to 3.000 incl. Over 3 .O00 Up to SOO incl. ,006 .O 15 Over .500 to 1.000 incl. ,007 ,017 Over 1.000 to 1.500
45、incl. .O08 .o20 Over 1.500 to 2.000 incl. .o 1 o .O25 Over 2.000 to 2.500 incl. ,050 ,020 Over 3 .O00 .o35 ,014 Over 2.500 to 3.000 incl. .o30 .o12 Annealed or Cold Drawn Bars ,010 .o 12 .O 15 .O20 .O25 ,030 ,035 .o50 3.10 Workmanship. The workmanship shall be compatible with the type of product, cl
46、ass offit, and finish specified. The nuts shall be free from pipes, fissures, gas cavities, sponginess, segregation, scale, fins, seams, or any other defects which might affect their serviceability. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the
47、contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or order, the supplier may use his own or any other facility suitable for the performance of the inspection requirements speci
48、fied herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to prescribed requirements. 4.2 Inspection terms. Inspection
49、terms and definitions used herein are in accordance with MIL-STD-109. 1.2.1 Inspection eauipnlent and facilities. Gagging and equipment used for inspection shall conform in all respects to ASTM F1469 and MIL-STD-45662. 4.3 Inspection lot. All nuts of the same type, material, protective finish, thread series, and size, produced under essentially the same conditions and offered for acceptance at one time shall be considered a lot for the purpose inspection. -1.4 Sampling for examination. S
