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NSN 5305-00-018-1671, 5305000181671
SCREW,CAP,HEXAGON HEAD

Federal Supply Classification
FSC 5305 - Screws
National Item Identification Number
NIIN 000181671
Codification Country
United States
Item Name Code
INC 18257
Criticality
(X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code
(N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.
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DLMS® Summary

National Stock Number 5305-00-018-1671

National Stock Number (NSN) 5305-00-018-1671, or NIIN 000181671, (screw,cap,hexagon head) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 4 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 4 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 3 suppliers are deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Mar 02, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.

This NSN is assigned to Item Name Code (INC) 18257. [AN EXTERNALLY THREADED FASTENER DESIGNED FOR INSERTION INTO HOLES IN ASSEMBLED PARTS, FOR MATING WITH A PREFORMED INTERNAL THREAD AND FOR TIGHTENING OR RELEASING BY TORQUING THE HEAD. THE THREADED AND UNTHREADED PORTIONS ARE BOTH OF THE SAME NOMINAL DIAMETER OF 0.190 INCH (5 MM) OR LARGER. HEAD DIMENSIONS AND SIZES OF THREADED AND UNTHREADED PORTIONS SHALL CONFORM TO INTERNATIONALLY RECOGNIZED FASTENER STANDARDS. THE THREAD LENGTH BEING THE CONTROLLED DIMENSION, THE GRIP LENGTH IS NOT SPECIFIED. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. THE HEAD IS NOT DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVER OR BY THE THUMB AND FINGERS. EXCLUDES:BOLT,MACHINE; BOLT,EXTERNALLY RELIEVED BODY; BOLT,INTERNAL WRENCHING; AND SCREW,CAP,SOCKET HEAD.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5305000181671 contains an unknown precious metal.

This NSN is associated to Schedule B 7318152000: bolts and bolts and their nuts or washers exported in the same shipment. The Schedule B End Use is listed as iron and steel products, other. NAICS classification category 332722: bolt, nut, screw, rivet, and washer manufacturing.

This information was last updated on .


Technical Characteristics

SURFACE TREATMENT
(SFTT) CADMIUM OVERALL OR ZINC OVERALL
FASTENER LENGTH
(AASB) 1.562 INCHES MINIMUM AND 1.625 INCHES MAXIMUM
HARDNESS RATING
(CQFM) 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT
(AASU) 0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM
HEAD STYLE
(AASK) HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) SAE GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL
(MATT) STEEL OVERALL
MINIMUM TENSILE STRENGTH
(CQBC) 120000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH
(CQHQ) 85000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER
(AHYM) 0.438 INCHES
WIDTH BETWEEN FLATS
(AATB) 0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
(STDC) QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
SURFACE TREATMENT
(SFTT) CADMIUM OR ZINC OVERALL
THREAD CLASS
(AAJD) 2A
THREAD DIRECTION
(AAJF) RIGHT-HAND
THREAD LENGTH
(AASA) 1.125 INCHES MINIMUM AND 1.312 INCHES MAXIMUM
THREAD SERIES DESIGNATOR
(THSD) UNF
THREAD QUANTITY PER INCH
(CMLP) 20

Manufacturer Part Numbers


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