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91131A124 — WASHER,CONVEX

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

91131A124: WASHER,CONVEX.

The WASHER,CONVEX is a the manufacturer industrial component. Key specifications include radius: 3.500 INCHES NOMINAL IN, material: STEEL OVERALL, recess_depth: 0.480 INCHES NOMINAL IN, hole_diameter: 1.562 INCHES NOMINAL IN, outside_diameter: 1.500 INCHES NOMINAL IN, style_designator: CONCAVE. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-614-4153, 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
91131A124
NSN: 5310-01-614-4153
FSC: 5310 — Nuts and Washers
CAGE: 3A054 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
radius3.500 INCHES NOMINAL IN
materialSTEEL OVERALL
recess_depth0.480 INCHES NOMINAL IN
hole_diameter1.562 INCHES NOMINAL IN
outside_diameter1.500 INCHES NOMINAL IN
style_designatorCONCAVE
features_providedCASEHARDENED
surface_treatmentOXIDE OVERALL
material_thickness0.520 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyBLACK-OXIDE,CASE HARDENED,STEEL,SELF ALIGNING WASHER SET
NSN5310-01-614-4153
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 91131A124 · 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
•
RADIUS: 3.500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CONCAVE
•
OUTSIDE DIAMETER: 1.500 INCHES NOMINAL IN
•
RECESS DEPTH: 0.480 INCHES NOMINAL IN
•
FEATURES PROVIDED: CASEHARDENED
•
MATERIAL THICKNESS: 0.520 INCHES NOMINAL IN
•
COLOR: YELLOW OVERALL
•
SURFACE TREATMENT: OXIDE OVERALL
TECHNICAL CHARACTERISTICS
RADIUS3.500 INCHES NOMINAL IN
STYLE DESIGNATORCONCAVE
OUTSIDE DIAMETER1.500 INCHES NOMINAL IN
RECESS DEPTH0.480 INCHES NOMINAL IN
FEATURES PROVIDEDCASEHARDENED
MATERIAL THICKNESS0.520 INCHES NOMINAL IN
COLORYELLOW OVERALL
SURFACE TREATMENTOXIDE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYBLACK-OXIDE,CASE HARDENED,STEEL,SELF ALIGNING WASHER SET
MATERIALSTEEL OVERALL
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 91131A124?
91131A124 is a WASHER,CONVEX.
What is the NSN for 91131A124?
91131A124 is cataloged in the U.S. Government catalog under NSN 5310-01-614-4153. 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.