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NSN 5305-01-281-4331, 5305012814331
SCREW,CLOSE TOLERANCE

Federal Supply Classification
FSC 5305 - Screws
National Item Identification Number
NIIN 012814331
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.
Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS® Summary

National Stock Number 5305-01-281-4331

National Stock Number (NSN) 5305-01-281-4331, or NIIN 012814331, (screw,close tolerance) was assigned June 23, 1988 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of May 03, 2018. There have been 6 contracts issued for this part number, with 6 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE5E218V7040, SPE5E215V8091, SPE5E215V6738, SPE5E215V6738, SPE5E215V6738. The total value of the awarded contracts has been US$ 451.22.

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

There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. The 24 month forecast from the US Government for this part number has high volatility, with an estimated forecasted value of US$ 163. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Aug 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 5305012814331 does not contain precious metals.

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) 0.475 INCHES MINIMUM AND 0.505 INCHES MAXIMUM
GRIP LENGTH
(ANEE) 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM
GRIP DIAMETER
(AAUR) 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM
HARDNESS RATING
(CQFM) 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER
(AASL) 0.338 INCHES MINIMUM AND 0.381 INCHES MAXIMUM
HEAD STYLE
(AASK) FLAT COUNTERSUNK
INTERNAL DRIVE STYLE
(ABQZ) CROSS RECESS TYPE 1
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL
(MATT) IRON ALLOY 660 OVERALL
MINIMUM TENSILE STRENGTH
(CQBC) 160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER
(AHYM) 0.190 INCHES
SPECIFICATION/STANDARD DATA
(ZZZK) 80205-NAS7203 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE FINISH
(CSYM) 32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH
(CSYM) 32.0 MICROINCHES GRIP
SURFACE FINISH
(CSYM) 32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
(STDC) QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT
(SFTT) PASSIVATE OVERALL
THREAD CLASS
(AAJD) 3A
THREAD DIRECTION
(AAJF) RIGHT-HAND
THREAD LENGTH
(AASA) 0.340 INCHES MINIMUM AND 0.390 INCHES MAXIMUM
THREAD QUANTITY PER INCH
(CMLP) 32
THREAD SERIES DESIGNATOR
(THSD) UNJF

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