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National Stock Number:
5325-99-641-9408
Federal Supply Class:
5325
National Item Identification Number:
996419408
Description:
INSERT,SCREW THREAD
Detail:
A cylindrical item which may have wrenching and/or driving facilities and/or shoulders. It is designed to be inserted in a drilled or a pretapped hole, or molded or pressed into soft material to reduce the size of a tapped hole; to provide threads; to add strength, and/or to prevent stripping. It is one of the following: (1) a one-piece, flanged or unflanged, internally threaded item which may have external threads, and/or serrations around the periphery of the collar, designed to engage a serrated lock ring which is not included with the item; (2) a one-piece precision coiled wire; (3) a two-piece item consisting of an internally threaded cylinder and a mating externally threaded part; or (4) a one-piece internally threaded item whose outside diameter is tapered and/or knurled and/or with fin(s). The internal thread of the item may have a locking feature. Excludes items having a sleeve on its underportion which can be clinched or crimped. Excludes BUSHING, MACHINE THREAD; NUT, PLAIN, KNURLED; NUT, PLAIN, ROUND; NUT, PLAIN, CLINCH and NUT, SELF-LOCKING, CLINCH. See also NUT, PLAIN, PLATE.
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Manufacturer Information:
| B 494998 | K0378 | ROLLS-ROYCE PLC | | B494998 | K0378 | ROLLS-ROYCE PLC |
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Techincal Specification:
| MATERIAL DOCUMENT AND CLASSIFICATION | BS HR650 NATIONAL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | STEEL | | OVERALL LENGTH | 21.0 MILLIMETERS NOMINAL | | SPECIAL FEATURES | EXT THD 0.438 IN. -20 UNJF-3A FOR 17.25 MM LG;1 END INT THD 0.296 IN. -28 UNIFIED FORM FOR 12.70 MM DEEP & COUNTERBORERED TO 8 MM DIA FOR 2 MM DEEP & CSK 45 DEG TO 9.20 MM DIA;SAME END 11.10 MM MAX OD;W/UNDERCUT 1.30 MM FROM END |
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