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550-161 — SHOCK ABSORBER,DIRECT ACTION

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

550-161: SHOCK ABSORBER,DIRECT ACTION.

The SHOCK ABSORBER,DIRECT ACTION is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: 455 MAIN TUBE. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-0728, 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
550-161
NSN: 3110-00-100-0728
NIINs: 001000728, 013162513, 017107774
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 16679 — WATSON H S CO (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agency455 MAIN TUBE
NSN3110-00-100-0728
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 550-161 · 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: 0.0312 INCHES NOMINAL IN
•
CONE WIDTH: 0.9983 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
BORE DIAMETER: 1.2500 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORNORMAL ANGLE
CONE CORNER RADIUS0.0312 INCHES NOMINAL IN
CONE WIDTH0.9983 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER1.2500 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 7
AH1337Reference document
Same NSN cross-reference
Reference document — Secondary reference
7500804Reference document
Same NSN cross-reference
Reference document — Secondary reference
22337996Reference document
Same NSN cross-reference
Reference document — Secondary reference
BT2580Reference document
Same NSN cross-reference
Reference document — Secondary reference
2580Reference document
Same NSN cross-reference
Reference document — Secondary reference
4T2580Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 550-161?
550-161 is a SHOCK ABSORBER,DIRECT ACTION.
What parts can replace 550-161?
There are 7 known substitutes for 550-161: AH1337, 7500804, 22337996 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 550-161?
550-161 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0728. 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.