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Technical Data Sheet
PartsTable / COMPONENT / OCB-500
OCB-500 ✓ 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 GROMMET,NONMETALLIC is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON OVERALL, grommet_style: ROUND, hole_diameter: 0.313 INCHES NOMINAL IN, overall_height: 0.406 INCHES NOMINAL IN, flange_thickness: 0.063 INCHES NOMINAL IN, groove_outside_diameter: 0.480 INCHES MINIMUM AND 0.520 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 5325-01-062-1097, 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
OCB-500
NSN: 5325-01-062-1097
FSC: 5325
CAGE: 28520 — HEYCO INC DBA HEYCO PRODUCTS (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON OVERALL
grommet_styleROUND
hole_diameter0.313 INCHES NOMINAL IN
overall_height0.406 INCHES NOMINAL IN
flange_thickness0.063 INCHES NOMINAL IN
groove_outside_diameter0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
grommet_construction_typeSOLID
large_flange_outside_diameter0.563 INCHES NOMINAL IN
material_document_and_classificationMIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5325-01-062-1097
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: OCB-500 · 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
•
GROMMET STYLE: ROUND
•
MATERIAL: PLASTIC POLYAMIDE NYLON OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
GROOVE OUTSIDE DIAMETER: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
•
GROMMET CONSTRUCTION TYPE: SOLID
•
HOLE DIAMETER: 0.313 INCHES NOMINAL IN
•
LARGE FLANGE OUTSIDE DIAMETER: 0.563 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
GROMMET STYLEROUND
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
GROOVE OUTSIDE DIAMETER0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
GROMMET CONSTRUCTION TYPESOLID
OVERALL HEIGHT0.406 INCHES NOMINAL IN
HOLE DIAMETER0.313 INCHES NOMINAL IN
LARGE FLANGE OUTSIDE DIAMETER0.563 INCHES NOMINAL IN
FLANGE THICKNESS0.063 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
402117Interchangeable
interchangeable cross-reference
interchangeable
HD524-3Interchangeable
interchangeable cross-reference
interchangeable
524-3Interchangeable
interchangeable cross-reference
interchangeable
52403Interchangeable
interchangeable cross-reference
interchangeable
5315003928230Interchangeable
interchangeable cross-reference
interchangeable
SMB157143Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is OCB-500?
OCB-500 is a GROMMET,NONMETALLIC.
What parts can replace OCB-500?
There are 13 known substitutes for OCB-500: 402117, HD524-3, 524-3 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for OCB-500?
OCB-500 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-062-1097. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026