PartsTable
Technical Data Sheet
37931 ✓ Verified by PartsTable
· BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The BOX CONNECTOR,ELECTRICAL is a the manufacturer industrial component. Key specifications include end_type: GLAND NUT W/INTERNAL THREAD FIRST END, material: IRON MALLEABLE, reset_type: MANUAL, timer_type: ELECTRICAL, current_type: AC, thread_class: 3A NUT THREAD A. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-323-5077, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
37931
NSN: 5307-00-323-5077
FSC: 5307
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
end_typeGLAND NUT W/INTERNAL THREAD FIRST END
materialIRON MALLEABLE
reset_typeMANUAL
timer_typeELECTRICAL
current_typeAC
thread_class3A NUT THREAD A
thread_length0.500 INCHES MAXIMUM STUD THREAD IN
overall_length1.188 INCHES NOMINAL IN
shank_diameter0.250 INCHES NOMINAL IN
furnished_itemsBUSHING AND RETAINING RING
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
deflection_angle90.0 DEGREES
NSN5307-00-323-5077
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 37931 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
THREAD SERIES DESIGNATOR: UNF NUT THREAD
THREAD LENGTH: 0.500 INCHES MAXIMUM STUD THREAD IN
MATERIAL: STEEL
THREAD CLASS: 3A NUT THREAD A
COTTER PIN HOLE DIAMETER: 0.070 INCHES NOMINAL FIRST HOLE IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH1.188 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNF NUT THREAD
THREAD LENGTH0.500 INCHES MAXIMUM STUD THREAD IN
MATERIALSTEEL
THREAD SERIES DESIGNATORUNS STUD THREAD
THREAD CLASS3A NUT THREAD A
COTTER PIN HOLE DIAMETER0.070 INCHES NOMINAL FIRST HOLE IN
THREAD LENGTH0.500 INCHES MINIMUM NUT THREAD IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
STYLE DESIGNATORSTEPPED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
BS-72101Interchangeable
interchangeable cross-reference
interchangeable
3793-1Interchangeable
interchangeable cross-reference
interchangeable
2271Interchangeable
interchangeable cross-reference
interchangeable
MAN.39310 PG 5 REF 7Interchangeable
interchangeable cross-reference
interchangeable
200885PInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 37931?
37931 is a BOX CONNECTOR,ELECTRICAL.
What parts can replace 37931?
There are 5 known substitutes for 37931: BS-72101, 3793-1, 2271 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 37931?
37931 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-323-5077. This indicates validated use in U.S. government and defense supply chains.
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