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NSN 5305-01-097-7919, 5305010977919
SCREW,CLOSE TOLERANCE

Federal Supply Classification
FSC 5305 - Screws
National Item Identification Number
NIIN 010977919
Codification Country
United States
Item Name Code
INC 29294
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 5305-01-097-7919

National Stock Number (NSN) 5305-01-097-7919, or NIIN 010977919, (screw,close tolerance) was assigned July 19, 1980 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are no manufacturer part numbers associated to this NSN.

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

This NSN is somewhat common among different platforms, belonging to 7 different weapons systems.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jun 02, 2005, 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) 29294. [A SCREW, MACHINE OR SCREW, CAP, SOCKET HEAD WHOSE UNTHREADED PORTION IS OF SPECIFIED GRIP LENGTH, PLATED OR UNPLATED, AND IS MACHINED TO A TOLERANCE OF ONE THOUSANDTH (0.001 IN.) (0.025 MM) OR LESS OF A SPECIFIC DIAMETER FOR ITEMS (1.000 IN.) (25 MM) OR LESS IN DIAMETER. ITEMS OVER (1.000 IN.) (25 MM) IN DIAMETER SHALL HAVE A TOLERANCE OF FIFTEEN TEN THOUSANDTHS (0.0015 IN.) (0.038 MM) OR LESS. THE NOMINAL MAJOR DIAMETER OF THE THREADS SHALL BE AT LEAST ONE THOUSANDTH (0.001 IN.) (0.025 MM) BELOW THE MINIMUM SHANK DIAMETER, BUT NOT BELOW THE MINIMUM MAJOR DIAMETER FOR APPLICABLE CLASS OF FIT, AS SHOWN IN THE SCREW THREAD STANDARDS, FED STD H28 AND/OR OTHER NATIONALLY RECOGNIZED STANDARDS. THE HEAD IS DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVER. IT IS NOT DESIGNED FOR ROTATION BY THE THUMB AND FINGERS. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS.]. 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 5305010977919 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

COUNTERSINK ANGLE
(CRSQ) 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH
(AASB) 0.638 INCHES MINIMUM AND 0.668 INCHES MAXIMUM
GRIP LENGTH
(ANEE) 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
GRIP DIAMETER
(AAUR) 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
HARDNESS RATING
(CQFM) 36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER
(AASL) 0.3504 INCHES MINIMUM AND 0.3988 INCHES MAXIMUM
HEAD STYLE
(AASK) FLAT COUNTERSUNK
INTERNAL DRIVE STYLE
(ABQZ) HIGH-TORQUE
NOMINAL THREAD DIAMETER
(AHYM) 0.250 INCHES
MATERIAL
(MATT) STEEL COMP E4340 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 6150 OVERALL
MINIMUM TENSILE STRENGTH
(CQBC) 160000 POUNDS PER SQUARE INCH
THREAD CLASS
(AAJD) 3A
THREAD DIRECTION
(AAJF) RIGHT-HAND
THREAD LENGTH
(AASA) 0.378 INCHES MINIMUM AND 0.428 INCHES MAXIMUM
THREAD SERIES DESIGNATOR
(THSD) UNJF
THREAD QUANTITY PER INCH
(CMLP) 28
SPECIFICATION/STANDARD DATA
(ZZZK) 80205-NAS1581 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE FINISH
(CSYM) 32.0 MICROINCHES GRIP
SURFACE FINISH
(CSYM) 32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
(STDC) QQ-P-416 TYPE 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT
(SFTT) CADMIUM OVERALL AND CHROMATE OVERALL

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