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NSN 5305-01-186-2166, 5305011862166
SCREW,CLOSE TOLERANCE

Federal Supply Classification
FSC 5305 - Screws
National Item Identification Number
NIIN 011862166
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 5305-01-186-2166

National Stock Number (NSN) 5305-01-186-2166, or NIIN 011862166, (screw,close tolerance) was assigned August 8, 1984 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There are no manufacturer part numbers associated to this NSN. ISO Group has several sources of supply for this NSN.

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

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.

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 5305011862166 contains an unknown precious metal.

This information was last updated on .


Technical Characteristics

GRIP DIAMETER
(AAUR) 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
INTERNAL DRIVE STYLE
(ABQZ) TRI-WING RECESS
SURFACE TREATMENT
(SFTT) PASSIVATE OVERALL
HEAD STYLE
(AASK) FLAT COUNTERSUNK
FEATURES PROVIDED
(CBBL) FINISHED HEAD
FASTENER LENGTH
(AASB) 1.598 INCHES MINIMUM AND 1.628 INCHES MAXIMUM
SPECIFICATION/STANDARD DATA
(ZZZK) 80205-NAS4003 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 80205-NAS4204/CANCELED/ PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
THREAD QUANTITY PER INCH
(CMLP) 28
THREAD LENGTH
(AASA) 0.425 INCHES NOMINAL
HEAD DIAMETER
(AASL) 0.456 INCHES MINIMUM AND 0.508 INCHES MAXIMUM
COUNTERSINK ANGLE
(CRSQ) 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
(STDC) QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SUPPLEMENTARY FEATURES
(SUPP) TRI-WING RECESS NO. NAS4000-6
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 5737,UNS K66286 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD CLASS
(AAJD) 3A
SURFACE FINISH
(CSYM) 125.0 MICROINCHES TOP OF HEAD
THREAD DIRECTION
(AAJF) RIGHT-HAND
SURFACE FINISH
(CSYM) 32.0 MICROINCHES THREADS
SURFACE FINISH
(CSYM) 32.0 MICROINCHES BEARING SURFACE OF HEAD
NOMINAL THREAD DIAMETER
(AHYM) 0.250 INCHES
GRIP LENGTH
(ANEE) 1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM
NONDEFINITIVE SPEC/STD DATA
(ZZZT) 1 CLASS AND A TYPE AND 3 TABLE AND 0.250-28 SIZE
SURFACE FINISH
(CSYM) 125.0 MICROINCHES GRIP
MATERIAL
(MATT) IRON ALLOY 660 OVERALL
THREAD SERIES DESIGNATOR
(THSD) UNJF

Manufacturer Part Numbers


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