PartsTable
Technical Data Sheet
Download PDF

A9931 — PLATE,MOUNTING,ANTENNA COUPLER

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

A9931: PLATE,MOUNTING,ANTENNA COUPLER.

The PLATE,MOUNTING,ANTENNA COUPLER is a the manufacturer industrial component. Key specifications include material: PLASTIC, cone_width: 1.4375 INCHES NOMINAL IN, bore_diameter: 4.2500 INCHES NOMINAL IN, overall_width: 2.980 INCHES NOMINAL IN, overall_height: 0.660 INCHES NOMINAL IN, overall_length: 5.437 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-3632, 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
A9931
NSN: 3110-00-100-3632
NIINs: 001003632, 011840684
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 89925 — ALTEC INDUSTRIES INC EASTERN DIV (USA)
SPECIFICATIONS
materialPLASTIC
cone_width1.4375 INCHES NOMINAL IN
bore_diameter4.2500 INCHES NOMINAL IN
overall_width2.980 INCHES NOMINAL IN
overall_height0.660 INCHES NOMINAL IN
overall_length5.437 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
basic_shape_styleRECTANGULAR PRISM
cone_corner_radius0.1406 INCHES NOMINAL IN
end_item_identification5985-00-980-7165
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-3632
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: A9931 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
STYLE DESIGNATOR: NORMAL ANGLE
•
CONE CORNER RADIUS: 0.1406 INCHES NOMINAL IN
•
CONE WIDTH: 1.4375 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
BORE DIAMETER: 4.2500 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORNORMAL ANGLE
CONE CORNER RADIUS0.1406 INCHES NOMINAL IN
CONE WIDTH1.4375 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER4.2500 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 10
D31129Reference document
Same NSN cross-reference
Reference document — Secondary reference
7EQH4221Reference document
Same NSN cross-reference
Reference document — Secondary reference
774025Reference document
Same NSN cross-reference
Reference document — Secondary reference
5230427817Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
149448Reference document
Same NSN cross-reference
Reference document — Secondary reference
LA492-22Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy A9931?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is A9931?
A9931 is a PLATE,MOUNTING,ANTENNA COUPLER.
What parts can replace A9931?
There are 10 known substitutes for A9931: D31129, 7EQH4221, 774025 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A9931?
A9931 is cataloged in the U.S. Government catalog under NSN 3110-00-100-3632. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — A9931

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.