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NA.00091 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

NA.00091: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2011 OVERALL, hole_diameter: 0.122 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN, overall_height: 0.250 INCHES NOMINAL IN, shoulder_height: 0.145 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN, outside_diameter: 0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, style_designator: SHOULDERED. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-434-9125, 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
NA.00091
NSN: 5310-01-434-9125
FSC: 5310 — Nuts and Washers
CAGE: 59041 — MISTRAS GROUP, INC. DBA MISTRAS DIV PHYSICAL ACOUSTICS; NDT AUTOMATION; VIBRAMETRICS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2011 OVERALL
hole_diameter0.122 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN
overall_height0.250 INCHES NOMINAL IN
shoulder_height0.145 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
outside_diameter0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
style_designatorSHOULDERED
shoulder_diameter0.145 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN
surface_treatmentANODIZE OVERALL
material_document_and_classificationQQ-A-223 2011-T3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
surface_treatment_document_and_classificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-434-9125
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: NA.00091 · 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 TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER HEIGHT: 0.145 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SHOULDERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-223 2011-T3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
•
SHOULDER DIAMETER: 0.145 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN
•
COLOR: BLACK OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.250 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER HEIGHT0.145 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
STYLE DESIGNATORSHOULDERED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-223 2011-T3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
SHOULDER DIAMETER0.145 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN
COLORBLACK OVERALL
SURFACE TREATMENTANODIZE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
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 NA.00091?
NA.00091 is a WASHER,SHOULDERED.
What is the NSN for NA.00091?
NA.00091 is cataloged in the U.S. Government catalog under NSN 5310-01-434-9125. 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.