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NSN 5305-01-266-8583, 5305012668583
SCREW,CLOSE TOLERANCE

Federal Supply Classification
FSC 5305 - Screws
National Item Identification Number
NIIN 012668583
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 5305-01-266-8583

National Stock Number (NSN) 5305-01-266-8583, or NIIN 012668583, (screw,close tolerance) was assigned October 31, 1987 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment.NIIN 012668583 was cancelled on January 2, 2014, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.

There are 3 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 7 suppliers. Today, 7 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 5 suppliers are deemed design controlled or valid supply parts.

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

This NSN is unique to one weapons system.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 17, 2014, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.

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 5305012668583 does not contain precious metals.

This NSN is associated to Schedule B 8109900000: zirconium and articles thereof nesoi. The Schedule B End Use is listed as finished metal shapes. NAICS classification category 331491: nonferrous metal (except copper and aluminum) rolling, drawing, and extruding.

This information was last updated on .


Technical Characteristics

SPECIAL FEATURES
(FEAT) 1THD HOLE IN TOP OF HEAD 0.138-32 UNJC-3B+ THREADED HOLE 0.300 IN. MIN 0.345 IN. MAX DP; COUNTERBORE 0.145 IN. MIN LG,0.150 IN. MAX LG; 0.060 IN. WIDE IN. WIDE IN UNTHREADED SHANK; DISTANT FROM TOP OF HEAD TO BEGINNING OF INJECTION PORT 0.270
III PART NAME ASSIGNED BY CONTROLLING AGENCY
(CXCY) NAVY SPECIAL PROJECT
COUNTERSINK ANGLE
(CRSQ) 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH
(AASB) 1.079 INCHES MINIMUM AND 1.109 INCHES MAXIMUM
GRIP DIAMETER
(AAUR) 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
GRIP LENGTH
(ANEE) 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
HEAD DIAMETER
(AASL) 0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
HEAD STYLE
(AASK) FLAT COUNTERSUNK
INTERNAL DRIVE STYLE
(ABQZ) HIGH-TORQUE
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) AMS 4928 ASSN STD 1ST MATERIAL RESPONSE AND AMS 4967 ASSN STD 2ND MATERIAL RESPONSE OVERALL
MATERIAL
(MATT) TITANIUM ALLOY UNS R56400 OVERALL
NOMINAL THREAD DIAMETER
(AHYM) 0.250 INCHES
PART NAME ASSIGNED BY CONTROLLING AGENCY
(CXCY) NAVY SPECIAL PROJECT
SPECIAL FEATURES
(FEAT) THD HOLE IN TOP OF HEAD 0.138-32 UNJC-3B+ THREADED HOLE 0.300 IN. MIN 0.345 IN. MAX DP; COUNTERBORE 0.145 IN. MIN LG,0.150 IN. MAX LG; 0.060 IN. WIDE IN. WIDE IN UNTHREADED SHANK; DISTANT FROM TOP OF HEAD TO BEGINNING OF INJECTION PORT 0.270
THREAD DIRECTION
(AAJF) RIGHT-HAND
THREAD CLASS
(AAJD) 3A
THREAD LENGTH
(AASA) 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM
THREAD SERIES DESIGNATOR
(THSD) UNJF
THREAD QUANTITY PER INCH
(CMLP) 28

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