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PartsTable / COMPONENT / 931B-4SE0500
931B-4SE0500 ✓ 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 INSERT,SCREW THREAD is a the manufacturer industrial component. Key specifications include length: 0.500 INCHES NOMINAL IN, material: STEEL OVERALL, insert_size: 0.4375-14 UNC-3A A, thread_class: 3B, style_designator: KEYLOCK, surface_treatment: PASSIVATE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-912-7237, 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
931B-4SE0500
NSN: 5325-00-912-7237
FSC: 5325
CAGE: 01556 — STANLEY ENGINEERED FASTENING LLC (USA)
SPECIFICATIONS
length0.500 INCHES NOMINAL IN
materialSTEEL OVERALL
insert_size0.4375-14 UNC-3A A
thread_class3B
style_designatorKEYLOCK
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.250 INCHES IN
thread_quantity_per_inch2B
thread_series_designatorUNIFIED NATIONAL JOINT (UNJ)
material_document_and_classificationASTM A582 TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
top_portion_unthreaded_outside_length0.047 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
top_unthreaded_portion_outside_diameter0.333 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
NSN5325-00-912-7237
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 931B-4SE0500 · 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
•
LENGTH: 0.500 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
STYLE DESIGNATOR: KEYLOCK
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
TOP UNTHREADED PORTION OUTSIDE DIAMETER: 0.341 INCHES NOMINAL IN
•
INSERT SIZE: 0.438-20 UNF 3A A
•
TOP PORTION UNTHREADED OUTSIDE LENGTH: 0.052 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 0.437 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
LENGTH0.500 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
STYLE DESIGNATORKEYLOCK
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TOP UNTHREADED PORTION OUTSIDE DIAMETER0.341 INCHES NOMINAL IN
INSERT SIZE0.438-20 UNF 3A A
TOP PORTION UNTHREADED OUTSIDE LENGTH0.052 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.437 INCHES NOMINAL IN
MATERIALSTEEL COMP 303 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
1A1063Interchangeable
interchangeable cross-reference
interchangeable
C311-1Interchangeable
interchangeable cross-reference
interchangeable
24778Interchangeable
interchangeable cross-reference
interchangeable
13555Interchangeable
interchangeable cross-reference
interchangeable
00904B-104B04-02800Interchangeable
interchangeable cross-reference
interchangeable
5904039Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 931B-4SE0500?
931B-4SE0500 is a INSERT,SCREW THREAD.
What parts can replace 931B-4SE0500?
There are 9 known substitutes for 931B-4SE0500: 1A1063, C311-1, 24778 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 931B-4SE0500?
931B-4SE0500 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-912-7237. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026