GSA A-A-3021-1996 EXTRACTOR SCREW (STUD AND PIPE)《起螺丝器(管柱螺栓)》.pdf

1、INCH-POUND A-A-3021 October 10.1996 COMMERCIAL ITEM DESCRIPTION EXTRACTOR, SCREW (STD AND PIPE) The General Services Administration has authorized the use of this Commercial Item Description for procurement of type I, class 1, style A and B; class 2; and class 3 extractors specified in GGG-E-936C fo

2、r ali federal agencies. I. SCOPE. 1.1 Scope. This Commercial Item Description covers handsperated extractors for use in removing broken screws, studs, bolts, and pipes. 2. CLASSIFICATION. 2.1 Classification. This Commercial Item Description covers screw (stud and pipe) extractors of the following cl

3、asses and styles: Class1 - Tapered, spiral flutes or ridges StyleA - Drill StyleB - Plug Class2 - Tapered, straight fluted Class3 - Straight, straight fluted 3. SALIENT CHARACTERISTICS. 3.1 Desim. The screw (stud and pipe) extractors shaii be of steel and shali be the standard product of the manufac

4、turer. A square end or other suitable means shail be provided for using a standard wrench in backing out broken screws, studs, bolts, and pipes. Dimensions not having a minimum, maximum, or tolerance range are considered to be nominai dimensions. Size deviations that are nod to standard manufacturin

5、g practices wiii be acceptable. The recommended drill size required for using the screw extractor shali be permanently and legibly marked on each extractor, the nominai pipe size shall be permanently and legibly marked on the class 3 screw extractors. When required to be tested for hardness, sample

6、extractors shaii be tested in accordance with ASTM E 18. When required to be tested for torsional moment, sample extractors shall be tested as follows: a. Class 1, style A, sizes 7 through 12, inclusive Class 1, style B. sizes 6 through 9, inclusive A hole shall be drilled in a steel plate or block,

7、 the hole being determined by referring to the largest driii size for the specific class, style, and size of the extractor listed in the applicable table in this commercial item description. The steel plate or block shall be of carbon tool steel and heat treated to a hardness of 36 to 42 on the Rock

8、weii C scale. Beneficial comments, recommendations, additions, deletions, clarifications, etc., and any other dab which may improve this document should be sent to: General Services Administration, Federai Supply Semice, Tools and Appliances Commodity Center, Kansas City, MO 64 13 1. Distribution St

9、atement A. Approved for public release; distribution is unlimited. FSC 5 120 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-b. Class 1, style A, sizes 4 through 6, inclusive Class 1, style B, sizes 2 through 5, inclusive, and including size 10 Class

10、 2, sizes 4 through 10, inclusive The hole size shall be determined as in “ayy above. The steel plate or block shail be of medium carbon steel and heat treated to a hardness of 24 to 30 on the Rockweil C scale. c. Extractors not included in “a” and “b” above: The hole size shall be determined as in

11、“a” above. The steel plate shall be of low-carbon, unhardened steel. If lead holes are not drilled, care shall be exercised to select drills that are ground on center, in order to prevent the holes from being drilled oversize. A new hole is required for each extractor when testing classes 1 and 2. T

12、he extractor shall be inserted in the drilled hole and gentiy driven in suniciently to provide a frm engagement. A torque testing machine, or other suitable means, shall be utilized to exert a steady pressure of torque unil the minimum torsional moment in inch-pounds is reached, or the extractor fai

13、ls. Failure shall be deemed to have occurred when the extractor breaks or a permanent bend or twist occurs. If more than one of the sample extractors fail to meet the minimum inch-pounds specined in Tables I, II, III, or IV, as applicable, this shall be cause for rejection of the lot represented by

14、the sample. 3.2 Class 1, style A and style B. The screw extractors shall have left-hand spiral flutes or ridges unless otherwise specified (see 7.2). The flutes shall start at the smail end and generate working edges at least to the minimum length of the specied taper. The screw extractors shall be

15、heat treated and conform to a hardness of 52 to 60 on the Rockwell C scale. 3.2.1 Class 1, stvle A. The type I, class 1, style A screw (stud and pipe) extractors, apered, spirai flutes or ridges, drill shall be similar to Figure 1 and conform to the dimensions specified in Table I. Figure 1. Screw (

16、stud and pipe) extractor, class 1, style A, tapered, spirai flutes or ridges, drill. TABLE I. Screw (stud and Dipel extractor. class 1, stvle A tapered, su iral flutes or ridges, drill dimensions and requirements Diameter Diameter Torsional moment small end large end Length of taper Overall length m

17、inimum Extractor (nches) (inches) (inches) (inches) (Inch-pounds) 0.054 to 0.070 5/64 to 3/32 7/64 to 9/64 11/64 to 13/64 15/64 to 17/64 11/32 to 318 7/16 to 1/2 23/32 to 314 O. 117 to 5/32 0.174 to 13/64 15/64 to 17/64 5/16 to 11/32 27/64 to 15/32 19/32 to 518 314 to 718 63/64 to 1-3/64 112 to 718

18、11/16 to 1-1/16 13/16 to 1-3/16 15/16 to 1-5/16 1-11/32 to 1-29/32 1-1/2 to 2 1-15/16 to 2-5/16 1-15/16 to 2-5/16 1-13/16 to 2-3/16 2-3/16 to 2-9/16 2-9/16 to 2-15/16 2-13/16 to 3-3/16 3-3/16 to 3-9/16 3-9/16 to 3-15/16 3-15/16 to 4-5/16 4-3/16 to 4-518 23 53 153 630 1,050 3,010 6,552 16,800 4 I t ?

19、 i 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-3 02 1 TABLE I. Screw (stud and Dim) extractor. class 1. style A. tapered. mirai flutes or ndnes, drill dimensions and requirements (continued) Diameter Diameter Torsional moment small end larg

20、e end Len of taper Overall length minimum Extractor (Inches) (Inches) (Inches) (Inches) (Inch-pounds) 9 31/32 to 1 1-114 to 1-5/16 2-1/16 to 2-7/16 4-7/16 to 5-1/32 30,000 10 1-7/32 to 1-114 1-112 to 1-9/16 2-5/16 to 2-314 4-13/16 to 5-114 48,000 11 1-15/32 to 1-112 1-13/16 to 1-718 2-13/16 to 3-114

21、 5-7/16 to 5-718 60,000 12 1-27/32 to 1-718 2-114 to 2-318 3-5/16 to 3-11/16 6-1/16 to 6-112 60,000 3.2.2 Class 1. stvle B. The class 1, style B screw (stud and pipe) extractors, tapa spiral flutes or ridges, plug shall be similar to Figure 2 and conform to the dimensions specified in Table II. Figu

22、re Screw (stud and pipe) extractor, LJSS 1, syle B, tapered, spirai flutes or ridges, plug. TABLE II. Screw (stud and pipe) extractor, class 1, stvle B. tamred, suiral flutes or ridpes, ulun dimensions and requirements Nominal Nominal dimension dimensions Extractor across comers, across comers, Leng

23、th of taper Overall length Torsional moment number (Inches) (Inches) (Inches) (Inches) (Inch-pounds) 1 3/16 7/16 314 1-112 650 2 114 1713 2 13/16 1-518 1,500 3 318 45/64 15/16 1-314 2,400 4 13/32 718 1-1/16 1-15/16 3,000 10 15/32 1-1/16 1-7/16 2-518 4,000 5 11/16 1-118 1-9/16 2-518 6,800 6 718 1-9/6

24、4 1-13/16 2-13/16 14,000 7 1 -513 2 1-15/16 2-3/16 3-318 30,000 8 1-13/32 2-118 2-5/16 3-112 60,000 9 2-1/32 2 -5 3/64 3-114 4-112 60,000 Size small end large end minimum minimum minimum 3.3 Class 2. The class 2 screw (stud and pipe) extractors, tapered, straight fluted, and fidl length of taper sha

25、ll be similar to Figure 3 and conform to the dimensions specified in Table III. The screw extractors shall be heat treated and conform to a hardness of 52 to 60 on the Rockwell C scale. Figure 3. Type I, class 2, screw and pipe extractors, tapered, straight fluted. 3 Provided by IHSNot for ResaleNo

26、reproduction or networking permitted without license from IHS-,-,-A-A-3023 99%99?4 0372322 462 A-A-302 1 TABLE m. Class 2, screw stud and uiue) extractors, tauered. straipht fluted dimensions and reauirements Acms corners, Across flats, Extractor dimension, dimension, Length of taper Torsional momen

27、t number (Inch) (Inch) (Inches) (Inches) (Inch-pounds) 1 118 3/16 1 2-5/16 90 2 11/64 3/16 718 2-518 160 3 13/64 114 1-1 1/32 2-7/8 320 4 19/64 5/16 1-7/16 3 500 5 11/32 3/8 1-518 3-114 670 6 27/64 7/16 1-23/32 3 -718 900 7 1/2 112 2-13/32 4-112 1,250 8 19/32 518 2-9/16 4-718 1,650 9 23/32 314 2-15/

28、32 5-3B 2,100 10 3 1/32 1 3 5-112 3,500 size small end large end - + 1/16 Overall length minimum 3.4 Class 3. The class 3 screw (stud and pipe) extractors, straight, straight fluted, square tang shaii be similar to Figure 4 and conform to the dimensions specified in Table IV for standard pipe, or Ta

29、ble V for extra strong pipe. The screw extractors shall be heat treated and conform to a hardness of 50 to 60 on the Rockwell C scale. Figure 4. Class 3, screw (stud and pipe) extractors, straight, straight fluted square tang. TABLE N. Class 3. screw (stud and Dim9 extractors, straight, straight flu

30、ted, standard DiDe dimensions and reauirements Size drill Nominal Body Lengthof overall Torsional for moment, tolSiOnal minimum test number (Inch) (Inches) (Inches) (inches) (Inches) (in Ch-poUnds) (Inches) 1 118 0.286 to 0.290 0.244 to 0.250 314 2-114 600 114 2 114 0.387 to 0.391 0.341 to 0.347 27/

31、32 2-1R 1,500 23/64 3 3/8 0.520 to 0.524 0.466 to 0.472 29/32 2-314 3,000 3 1/64 5 314 0.858 to 0.862 0.782 to 0.790 1 3-114 10,Ooo 13/16 Extractor standard Diameterover diameter flutes lengui size pipesize flutes betweenflutes 1/16 5 1/16 4 1R 0.653 to 0.657 0.581 to 0.588 1 3 5,000 39/64 6 1 1.092

32、 to 1.096 1.008 to 1.016 1 3-1/2 20,000 1-1/32 7 1-114 1.433 to 1.437 1.332 to 1.340 1-114 3-314 25,000 1-23/64 8 1-1/2 1.672 to 1.676 1.562 to 1.570 1-318 4 30,000 1-19/32 9 2 2.141 to 2.146 2.014 to 2.022 1-10 4-1R 40,000 2-3/64 ! 4 Provided by IHSNot for ResaleNo reproduction or networking permit

33、ted without license from IHS-,-,-A-A-3023 %Y99974 0372323 3T9 A-A-302 1 TABLE IV. Class 3, screw (stud and pipe) extractors. straight. straight fluted. extra strong pipe dimensions and requirements Size drill Extractor extra Diameterover diameter flutes lagth moment, torsionai number Size (inches) f

34、lutes (inches) (inches) (inch-puck) (Inches) Nominal Body Lengthof Overall Torsional for size strongpipe flutes between 5 1/16 i.e., plastic or fabric wraps or miis, or metal, plastic, wooden boxes, or wooden blocks (see 3.7). 7.3 National Stock Numbers NSNs). The following list of NSNs corresponds

35、to the classes and styles specifed in this CID. This list may not be indicative of all possible NSNs associated with this CID. Extractor Extractor (spiral, fluted, and tapered) (straight, fluted, and tapered) NSN SUE NSN SIZE 5 120-00-240-5223 5 120-00-580-2359 5 120-00-240-5221 5 120-00-240-5222 5

36、120-00-240-52 19 5 120-00-240-5220 5 120-00-240-52 17 5120-00-242-11 18 5 120-00-240-5215 5 120-00-223-6954 5 120-00-2236955 1 5120-00-180-0777 1 2 5120-00-180-0778 2 3 5 120-00-180-0779 3 4 5 120-00-180-0780 4 5 6 7 8 9 11 12 MILITARY INTERESTS: NONE: DoD has no registered interest in revisions or notices to this Commercial Item Description until further notice. PREPARING ACTIVITY: GSA - FSS 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-