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NSN 5305-01-450-3255, 5305014503255
THUMBSCREW

Federal Supply Classification
FSC 5305 - Screws
National Item Identification Number
NIIN 014503255
Codification Country
United States
Item Name Code
INC 06673
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 5305-01-450-3255

National Stock Number (NSN) 5305-01-450-3255, or NIIN 014503255, (thumbscrew) was assigned November 4, 1997 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, with the most recent procurement date of Oct 13, 2009. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPM5AB10V0212. The total value of the awarded contracts has been US$ 1,002.00.

This NSN is unique to one weapons system.

There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Dec 03, 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) 06673. [AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER. IT MAY HAVE AN UNTHREADED PORTION WITH A DIAMETER LESS THAN, EQUAL TO, OR GREATER THAN THE DIAMETER OF THE THREADED PORTION. IT HAS EITHER A VERTICALLY FLATTENED, CIRCULAR KNURLED, SPLINED OR SMOOTHED, OR WING TYPE HEAD, ALL OF WHICH ARE DESIGNED FOR ROTATION BY THE THUMB AND FINGERS. FOR ITEMS HAVING WRENCHING FACILITIES SUCH AS SOCKET RECESS, MULTIPLE SPLINE OR SLOT HEADS, USE SCREW (AS MODIFIED) OR BOLT (AS MODIFIED).]. 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 5305014503255 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

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER
(AAWK) 4.160 INCHES NOMINAL
FASTENER LENGTH
(AASB) 4.150 INCHES MINIMUM AND 4.170 INCHES MAXIMUM
HEAD DIAMETER
(AASL) 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM
HEAD HEIGHT
(AASU) 1.580 INCHES MINIMUM AND 1.600 INCHES MAXIMUM
HEAD STYLE
(AASK) KNURLED NO. 6
NONSTANDARD THREAD PITCH DIAMETER
(CFSG) +0.2139 TO 0.2175 INCHES
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) ASTM A581, A582, OR AMS 5640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL
(MATT) STEEL COMP 303 OVERALL
NOMINAL THREAD DIAMETER
(AHYM) 0.250 INCHES
THREAD CLASS
(AAJD) 2A
THREAD DIRECTION
(AAJF) RIGHT-HAND
THREAD LENGTH
(AASA) 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
THREAD QUANTITY PER INCH
(CMLP) 20
THREAD SERIES DESIGNATOR
(THSD) UNC
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
(STDC) MIL-STD-171, PARA 5.4.1 MIL STD SINGLE TREATMENT RESPONSE OVERALL
NONSTANDARD THREAD PITCH DIAMETER
(CFSG) +0.2139/+0.2175 INCHES

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