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Technical Data Sheet
PartsTable / COMPONENT / T181A
T181A ✓ 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 RING,RETAINING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 510, ring_style: OFFSET, usage_design: INTERNAL, end_play_takeup: 0.312 INCHES NOMINAL IN, inside_diameter: 2.283 INCHES NOMINAL IN, major_thickness: 0.189 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-523-8183, 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
T181A
NSN: 5325-00-523-8183
FSC: 5325
CAGE: 09136 — BAY CITY SHOVELS, INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY 510
ring_styleOFFSET
usage_designINTERNAL
end_play_takeup0.312 INCHES NOMINAL IN
inside_diameter2.283 INCHES NOMINAL IN
major_thickness0.189 INCHES NOMINAL IN
outside_diameter3.375 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-W-401 AMEND. 5 FED SPEC SINGLE MATERIAL RESPONSE
NSN5325-00-523-8183
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: T181A · 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
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
END PLAY TAKEUP: 0.312 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY 510
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-401 AMEND. 5 FED SPEC SINGLE MATERIAL RESPONSE
•
MAJOR THICKNESS: 0.189 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
INSIDE DIAMETER: 2.283 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 3.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CASEHARDENING INDICATORNOT CASEHARDENED
END PLAY TAKEUP0.312 INCHES NOMINAL IN
MATERIALCOPPER ALLOY 510
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-401 AMEND. 5 FED SPEC SINGLE MATERIAL RESPONSE
MAJOR THICKNESS0.189 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
INSIDE DIAMETER2.283 INCHES NOMINAL IN
OUTSIDE DIAMETER3.375 INCHES NOMINAL IN
USAGE DESIGNINTERNAL
RING STYLEOFFSET
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
172576Interchangeable
interchangeable cross-reference
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M23C3Interchangeable
interchangeable cross-reference
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117924Interchangeable
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1120-1Interchangeable
interchangeable cross-reference
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416952-1Interchangeable
interchangeable cross-reference
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2483562-1AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is T181A?
T181A is a RING,RETAINING.
What parts can replace T181A?
There are 18 known substitutes for T181A: 172576, M23C3, 117924 and 15 more. Substitute compatibility should be verified for your specific system.
Is T181A still available?
T181A 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: July 2026