1、_ US53308 REV B 53 9799932 0005997 O 494747 FE3 5Lip 5305 OPTIONAL ; 5305 SOTLS: 1. H.Tt.YIAL: Alloy steel, Grade 8, in accordance bith procurement specification. Minimum ulti- mat tensile strength: 150,000 p.s.i. 2. FH3TEZTIE ZOATISC: Phosphate coated in accordance with procurement specification. 3
2、. THFWADS: THRIAD LESCTH: The threads shall be in accordance with Screw-Thread Standards for Federal Services. Handbock H25. 4. Minimum thread length shall be twice the diameter plus 1/4 inch. The toler- ance shall be plus 3/16 inch or 2-1/2 threads, bhichever . is greater: n screws that are too sho
3、rt far minimum thread lengths, Che distance !rom the bearing surface of the head to the first complete thread shall na? exceed the length of 2-1/2 threads. 5. DIMESSICSS: All dimensions are in inches, unless othetvise specified. 6. 7. HEAD MARhlC: Heads shall be marked in accordance with MIL-HDBR-13
4、1. Raised markings are preferred, stampings are acceptable. PART SKWg: The HS part number consists of the WS number, plus the dash number. Example : XS51108-1. 4. 9. HPferr.nir.J iIt,i.umrnrs shall be of the issue in effect on date of invitations for bid. kur .lrsign r4iture purposes, this standard takes precedence over procurement documents ref- ri-rnt.e herein. Mli IT ARY ST A 1 DA ID ,A *; TITLE - SCREW.GAP. HEXAGON HEAD (FIYISHED HEXAGON BLT), Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
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