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PartsTable / COMPONENT / 931A-2CS312
931A-2CS312 ✓ 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: 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN, material: STEEL COMP 1117 OVERALL, insert_size: 0.312-18 UNC-3A A, style_designator: KEYLOCK, surface_treatment: CADMIUM OVERALL, material_document_and_classification: QQ-S-633,COND ANNEALED-CANCELED FED SPEC SINGLE MATERIAL RESPONSE 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 5325-00-950-1259, 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-2CS312
NSN: 5325-00-950-1259
FSC: 5325
CAGE: 01556 — STANLEY ENGINEERED FASTENING LLC (USA)
SPECIFICATIONS
length0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
materialSTEEL COMP 1117 OVERALL
insert_size0.312-18 UNC-3A A
style_designatorKEYLOCK
surface_treatmentCADMIUM OVERALL
material_document_and_classificationQQ-S-633,COND ANNEALED-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
top_portion_unthreaded_outside_length0.040 INCHES NOMINAL IN
top_unthreaded_portion_outside_diameter0.239 INCHES NOMINAL IN
NSN5325-00-950-1259
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 931A-2CS312 · 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: 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEYLOCK
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633,COND ANNEALED-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
•
TOP UNTHREADED PORTION OUTSIDE DIAMETER: 0.239 INCHES NOMINAL IN
•
INSERT SIZE: 0.312-18 UNC-3A A
•
TOP PORTION UNTHREADED OUTSIDE LENGTH: 0.040 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1117 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
LENGTH0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
STYLE DESIGNATORKEYLOCK
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633,COND ANNEALED-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
TOP UNTHREADED PORTION OUTSIDE DIAMETER0.239 INCHES NOMINAL IN
INSERT SIZE0.312-18 UNC-3A A
TOP PORTION UNTHREADED OUTSIDE LENGTH0.040 INCHES NOMINAL IN
MATERIALSTEEL COMP 1117 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
N1251503Interchangeable
interchangeable cross-reference
interchangeable
12515Interchangeable
interchangeable cross-reference
interchangeable
12515-03Interchangeable
interchangeable cross-reference
interchangeable
NCS15-220G1Interchangeable
interchangeable cross-reference
interchangeable
DM15F220JInterchangeable
interchangeable cross-reference
interchangeable
658021Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 931A-2CS312?
931A-2CS312 is a INSERT,SCREW THREAD.
What parts can replace 931A-2CS312?
There are 13 known substitutes for 931A-2CS312: N1251503, 12515, 12515-03 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 931A-2CS312?
931A-2CS312 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-950-1259. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026