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PartsTable / COMPONENT / 502AS2137-007
502AS2137-007 ✓ 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

STUD ASSEMBLY,TURNLOCK FASTENER. Key specifications include diameter: 0.377 INCHES MINIMUM AND 0.384 INCHES MAXIMUM IN, material: STEEL OVERALL, drive_type: SLOTTED, eyelet_length: 0.352 INCHES NOMINAL IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, stud_assembly_style: STUD ASSEMBLY. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-290-8233, 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
502AS2137-007
NSN: 5325-00-290-8233
FSC: 5325
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
diameter0.377 INCHES MINIMUM AND 0.384 INCHES MAXIMUM IN
materialSTEEL OVERALL
drive_typeSLOTTED
eyelet_length0.352 INCHES NOMINAL IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
stud_assembly_styleSTUD ASSEMBLY
securing_device_typeSPRING
eyelet_outside_diameter0.341 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
turnlock_stud_head_styleFLAT COUNTERSUNK
material_accommodated_thickness0.231 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
material_document_and_classificationASTM A547 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NSN5325-00-290-8233
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 502AS2137-007 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A547 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
TURNLOCK STUD HEAD STYLE: FLAT COUNTERSUNK
•
SECURING DEVICE TYPE: SPRING
•
STUD ASSEMBLY STYLE: STUD ASSEMBLY
•
EYELET OUTSIDE DIAMETER: 0.341 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A547 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TURNLOCK STUD HEAD STYLEFLAT COUNTERSUNK
SECURING DEVICE TYPESPRING
STUD ASSEMBLY STYLESTUD ASSEMBLY
EYELET OUTSIDE DIAMETER0.341 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIAL ACCOMMODATED THICKNESS0.231 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD0.603 INCHES MINIMUM AND 0.613 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
500197Interchangeable
interchangeable cross-reference
interchangeable
40027Interchangeable
interchangeable cross-reference
interchangeable
7536Interchangeable
interchangeable cross-reference
interchangeable
10-27448Interchangeable
interchangeable cross-reference
interchangeable
NDC00338-0045-03Interchangeable
interchangeable cross-reference
interchangeable
1583-03Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 502AS2137-007?
502AS2137-007 is a STUD ASSEMBLY,TURNLOCK FASTENER.
What parts can replace 502AS2137-007?
There are 21 known substitutes for 502AS2137-007: 500197, 40027, 7536 and 18 more. Substitute compatibility should be verified for your specific system.
Is 502AS2137-007 still available?
502AS2137-007 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026