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NSN 5305-01-188-1667, 5305011881667
SCREW,CLOSE TOLERANCE

Federal Supply Classification
FSC 5305 - Screws
National Item Identification Number
NIIN 011881667
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 5305-01-188-1667

National Stock Number (NSN) 5305-01-188-1667, or NIIN 011881667, (screw,close tolerance) was assigned August 31, 1984 in the Federal Logistics Information System (FLIS). NIIN 011881667 was cancelled on August 29, 2018, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. 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 5 suppliers. Today, 5 suppliers are listed as Active suppliers 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.

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 5305011881667 does not contain precious metals.

This information was last updated on .


Technical Characteristics

MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) 23-112 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATOR
(THSD) UNJF
THREAD LENGTH
(AASA) 0.287 INCHES MINIMUM AND 0.337 INCHES MAXIMUM
THREAD CLASS
(AAJD) 3A
NOMINAL THREAD DIAMETER
(AHYM) 0.250 INCHES
THREAD DIRECTION
(AAJF) RIGHT-HAND
FASTENER LENGTH
(AASB) 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM
MATERIAL
(MATT) STEEL CORROSION RESISTING OVERALL
GRIP LENGTH
(ANEE) 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM
INTERNAL DRIVE STYLE
(ABQZ) HIGH-TORQUE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
(STDC) MIL-C-83488,TY 2,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLE
(AASK) OVAL COUNTERSUNK
HEAD DIAMETER
(AASL) 0.3898 INCHES MINIMUM AND 0.3948 INCHES MAXIMUM
SURFACE TREATMENT
(SFTT) CHROMATE OVERALL AND ALUMINUM OVERALL
THREAD QUANTITY PER INCH
(CMLP) 28
COUNTERSINK ANGLE
(CRSQ) 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
GRIP DIAMETER
(AAUR) 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM


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