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A43720 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

A43720: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: OFFSET, usage_design: EXTERNAL, end_play_takeup: 0.400 INCHES NOMINAL IN, inside_diameter: 0.810 INCHES NOMINAL IN, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-099-8880, 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
A43720
NSN: 5325-01-099-8880
FSC: 5325 — Fastening Devices
CAGE: 10988 — CNH INDUSTRIAL AMERICA LLC DBA CNH AMERICA (USA)
SPECIFICATIONS
materialSTEEL
ring_styleOFFSET
usage_designEXTERNAL
end_play_takeup0.400 INCHES NOMINAL IN
inside_diameter0.810 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleRECTANGULAR
material_document_and_classification401340,ROSS GEAR DIV,TRW MFR REF SINGLE MATERIAL RESPONSE
NSN5325-01-099-8880
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A43720 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: 401340,ROSS GEAR DIV,TRW MFR REF SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
END PLAY TAKEUP: 0.400 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.810 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: OFFSET
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL
MATERIAL DOCUMENT AND CLASSIFICATION401340,ROSS GEAR DIV,TRW MFR REF SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
END PLAY TAKEUP0.400 INCHES NOMINAL IN
INSIDE DIAMETER0.810 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLEOFFSET
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 1
199171Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A43720?
A43720 is a RING,RETAINING.
What parts can replace A43720?
There is 1 known substitute for A43720: 199171. Substitute compatibility should be verified for your specific system.
What is the NSN for A43720?
A43720 is cataloged in the U.S. Government catalog under NSN 5325-01-099-8880. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.