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Technical Data Sheet
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AN931A8S20 — Technical Data Sheet

✓ 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: RUBBER SYNTHETIC OVERALL, groove_width: 0.125 INCHES NOMINAL IN, grommet_style: ROUND, hole_diameter: 0.500 INCHES NOMINAL IN, overall_height: 0.313 INCHES NOMINAL IN, flange_thickness: 0.094 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System under NSN 5325-00-171-4688, 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
AN931A8S20
NSN: 5325-00-171-4688
FSC: 5325
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
groove_width0.125 INCHES NOMINAL IN
grommet_styleROUND
hole_diameter0.500 INCHES NOMINAL IN
overall_height0.313 INCHES NOMINAL IN
flange_thickness0.094 INCHES NOMINAL IN
features_providedCOOLANT RESISTANT AND OIL RESISTANT
end_item_identificationMRAP BUFFALO MK2A2; A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
groove_outside_diameter1.250 INCHES NOMINAL IN
grommet_construction_typeSOLID
large_flange_outside_diameter1.500 INCHES NOMINAL IN
material_document_and_classificationASTM D2000 BG515A14B24C32E03619Z ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5325-00-171-4688
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN931A8S20 · 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
•
FLANGE THICKNESS: 0.094 INCHES NOMINAL IN
•
GROOVE WIDTH: 0.125 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.500 INCHES NOMINAL IN
•
GROMMET STYLE: ROUND
•
LARGE FLANGE OUTSIDE DIAMETER: 1.500 INCHES NOMINAL IN
•
GROMMET CONSTRUCTION TYPE: SOLID
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.313 INCHES NOMINAL IN
FLANGE THICKNESS0.094 INCHES NOMINAL IN
GROOVE WIDTH0.125 INCHES NOMINAL IN
HOLE DIAMETER0.500 INCHES NOMINAL IN
END ITEM IDENTIFICATIONMRAP BUFFALO MK2A2; A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
GROMMET STYLEROUND
LARGE FLANGE OUTSIDE DIAMETER1.500 INCHES NOMINAL IN
GROMMET CONSTRUCTION TYPESOLID
FEATURES PROVIDEDCOOLANT RESISTANT AND OIL RESISTANT
GROOVE OUTSIDE DIAMETER1.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
2862InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
B2862InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
862InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
2274189InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
BB22006InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
E220122InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN931A8S20?
AN931A8S20 is a GROMMET,NONMETALLIC.
What parts can replace AN931A8S20?
There are 21 known substitutes for AN931A8S20: 2862, B2862, 862 and 18 more. Substitute compatibility should be verified for your specific system.
Is AN931A8S20 still available?
AN931A8S20 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: September 2026