PartsTable
Technical Data Sheet
Download PDF

A-991 — RELAY,ELECTROMAGNETIC

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

A-991: RELAY,ELECTROMAGNETIC.

The RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include material: STEEL, end_style: VERTEX OUTSIDE PERIPHERY, ring_style: STRAIGHT GAP, usage_design: EXTERNAL, inside_diameter: 1.219 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN, major_thickness: 0.060 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-737-3165, 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
A-991
NSN: 5325-00-737-3165
NIINs: 007373165, 009920618
FSC: 5325 — Fastening Devices
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
materialSTEEL
end_styleVERTEX OUTSIDE PERIPHERY
ring_styleSTRAIGHT GAP
usage_designEXTERNAL
inside_diameter1.219 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN
major_thickness0.060 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN
outside_diameter1.469 INCHES MINIMUM AND 1.484 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleRECTANGULAR
NSN5325-00-737-3165
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A-991 · 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
•
USAGE DESIGN: EXTERNAL
•
END STYLE: VERTEX OUTSIDE PERIPHERY
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 1.469 INCHES MINIMUM AND 1.484 INCHES MAXIMUM IN
•
MAJOR THICKNESS: 0.060 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 1.219 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: STRAIGHT GAP
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL
END STYLEVERTEX OUTSIDE PERIPHERY
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER1.469 INCHES MINIMUM AND 1.484 INCHES MAXIMUM IN
MAJOR THICKNESS0.060 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN
INSIDE DIAMETER1.219 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESTRAIGHT GAP
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 2
GP7784Reference document
Same NSN cross-reference
Reference document — Secondary reference
R20868Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy A-991?
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 A-991?
A-991 is a RELAY,ELECTROMAGNETIC.
What parts can replace A-991?
There are 2 known substitutes for A-991: GP7784, R20868. Substitute compatibility should be verified for your specific system.
What is the NSN for A-991?
A-991 is cataloged in the U.S. Government catalog under NSN 5325-00-737-3165. 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 — A-991

✓ 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.