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Technical Data Sheet
PartsTable / COMPONENT / 931A-4CS0437
931A-4CS0437 ✓ 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: 0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN, material: STEEL COMP 1117 OVERALL, insert_size: 0.438-14 UNC 3A A, style_designator: KEYLOCK, surface_treatment: CADMIUM OVERALL, width_across_flats: 0.331 INCHES MINIMUM AND 0.334 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-899-1375, 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
931A-4CS0437
NSN: 5325-00-899-1375
FSC: 5325
CAGE: 01556 — STANLEY ENGINEERED FASTENING LLC (USA)
SPECIFICATIONS
length0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN
materialSTEEL COMP 1117 OVERALL
insert_size0.438-14 UNC 3A A
style_designatorKEYLOCK
surface_treatmentCADMIUM OVERALL
width_across_flats0.331 INCHES MINIMUM AND 0.334 INCHES MAXIMUM IN
material_document_and_classificationQQ-S-633,COND ANNEALED-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
top_portion_unthreaded_outside_length0.052 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
top_unthreaded_portion_outside_diameter0.338 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
NSN5325-00-899-1375
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 931A-4CS0437 · 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
•
TOP UNTHREADED PORTION OUTSIDE DIAMETER: 0.338 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.331 INCHES MINIMUM AND 0.334 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEYLOCK
•
MATERIAL: STEEL COMP 1117 OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633,COND ANNEALED-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
TOP PORTION UNTHREADED OUTSIDE LENGTH: 0.052 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
•
LENGTH: 0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
TOP UNTHREADED PORTION OUTSIDE DIAMETER0.338 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.331 INCHES MINIMUM AND 0.334 INCHES MAXIMUM IN
STYLE DESIGNATORKEYLOCK
MATERIALSTEEL COMP 1117 OVERALL
SURFACE TREATMENTCADMIUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633,COND ANNEALED-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TOP PORTION UNTHREADED OUTSIDE LENGTH0.052 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
LENGTH0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN
INSERT SIZE0.438-14 UNC 3A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
443146Interchangeable
interchangeable cross-reference
interchangeable
10327Interchangeable
interchangeable cross-reference
interchangeable
84377Interchangeable
interchangeable cross-reference
interchangeable
SCB91417Interchangeable
interchangeable cross-reference
interchangeable
14717Interchangeable
interchangeable cross-reference
interchangeable
5315PL0660589Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 931A-4CS0437?
931A-4CS0437 is a INSERT,SCREW THREAD.
What parts can replace 931A-4CS0437?
There are 10 known substitutes for 931A-4CS0437: 443146, 10327, 84377 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 931A-4CS0437?
931A-4CS0437 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-899-1375. 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