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National Stock Number (NSN) Output Data

NSN:
NIIN:
Item Name:
SCREW , CLOSE TOLERANCE

Definition:

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.

Reference/Part Number

Part Number CAGE Status RNCC RNVC DAC RNAAC MSDS SADC
PBF1571-4-8L 1W025 A 3 2 A ZZ
PBF1571-4-8L 27624 A 5 9 A ZZ

CAGE Information

Code Company
1W025 NORTHROP GRUMMAN SYSTEMS CORPORATION
27624 PAUL R. BRILES INC. DBA PB FASTENERS

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AASB FASTENER LENGTH 0.888 INCHES MINIMUM AND 0.920 INCHES MAXIMUM
AASL HEAD DIAMETER 0.502 INCHES MINIMUM AND 0.511 INCHES MAXIMUM
CRSQ COUNTERSINK ANGLE 129.0 DEGREES MINIMUM AND 131.0 DEGREES MAXIMUM
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AMS 5844 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THSD THREAD SERIES DESIGNATOR UNJF
FEAT SPECIAL FEATURES DRY FILM LUBRICANT-THREADS ONLY
AAJD THREAD CLASS 3A
AHYM NOMINAL THREAD DIAMETER 0.250 INCHES
CMLP THREAD QUANTITY PER INCH 28
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT COUNTERSUNK
ANEE GRIP LENGTH 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
CQBC MINIMUM TENSILE STRENGTH 240000 POUNDS PER SQUARE INCH
AAWU SINGLE SHEAR STRENGTH 132000 POUNDS PER SQUARE INCH
AAUR GRIP DIAMETER 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
ABQZ INTERNAL DRIVE STYLE OFFSET CRUCIFORM (TORQUE SET)
SFTT SURFACE TREATMENT PASSIVATE OVERALL
MATT MATERIAL COBALT COMP MP-35-N OVERALL
AASA THREAD LENGTH 0.403 INCHES NOMINAL

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