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A10291 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A10291: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include height: 0.107 INCHES MINIMUM AND 0.137 INCHES MAXIMUM IN, material: STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1022 OVERALL, head_style: FILLISTER, surface_finish: 125.0 MICROINCHES OVERALL, first_end_style: SQUARE, style_designator: SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-500-9366, 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
A10291
NSN: 5315-00-500-9366
NIINs: 005009366, 013234703
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: U4574 — FNH UK LTD (GBR)
SPECIFICATIONS
height0.107 INCHES MINIMUM AND 0.137 INCHES MAXIMUM IN
materialSTEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1022 OVERALL
head_styleFILLISTER
surface_finish125.0 MICROINCHES OVERALL
first_end_styleSQUARE
style_designatorSHOULDER
first_step_length0.203 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
pin_head_diameter0.237 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN
under_head_length0.443 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
second_step_length0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
first_step_diameter0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
second_step_diameter0.1235 INCHES MINIMUM AND 0.1275 INCHES MAXIMUM IN
NSN5315-00-500-9366
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A10291 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE FINISH: 125.0 MICROINCHES OVERALL
•
FIRST STEP DIAMETER: 0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
•
UNDER HEAD LENGTH: 0.443 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
•
FIRST END STYLE: SQUARE
•
SECOND STEP LENGTH: 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SHOULDER
•
PIN HEAD DIAMETER: 0.237 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES OVERALL
FIRST STEP DIAMETER0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
UNDER HEAD LENGTH0.443 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
FIRST END STYLESQUARE
SECOND STEP LENGTH0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
STYLE DESIGNATORSHOULDER
PIN HEAD DIAMETER0.237 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HEAD STYLEFILLISTER
SECOND STEP DIAMETER0.1235 INCHES MINIMUM AND 0.1275 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 A10291?
A10291 is a BEARING,BALL,ANNULAR.
What is the NSN for A10291?
A10291 is cataloged in the U.S. Government catalog under NSN 5315-00-500-9366. 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.