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731A0011F051A — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

731A0011F051A: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include recess_depth: 0.188 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN, hole_diameter: 1.182 INCHES MINIMUM AND 1.183 INCHES MAXIMUM IN, overall_height: 0.438 INCHES NOMINAL IN, recess_diameter: 1.697 INCHES MINIMUM AND 1.699 INCHES MAXIMUM IN, outside_diameter: 2.000 INCHES NOMINAL IN, special_features: BOTTOM EDGE CHAMFERED,30.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-191-0458, 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
731A0011F051A
NSN: 5310-01-191-0458
FSC: 5310 — Nuts and Washers
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
recess_depth0.188 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN
hole_diameter1.182 INCHES MINIMUM AND 1.183 INCHES MAXIMUM IN
overall_height0.438 INCHES NOMINAL IN
recess_diameter1.697 INCHES MINIMUM AND 1.699 INCHES MAXIMUM IN
outside_diameter2.000 INCHES NOMINAL IN
special_featuresBOTTOM EDGE CHAMFERED,30.0 DEGREES NOMINAL
style_designatorRECESSED
NSN5310-01-191-0458
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 731A0011F051A · 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
•
STYLE DESIGNATOR: RECESSED
•
OUTSIDE DIAMETER: 2.000 INCHES NOMINAL IN
•
RECESS DEPTH: 0.188 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN
•
RECESS DIAMETER: 1.697 INCHES MINIMUM AND 1.699 INCHES MAXIMUM IN
•
HOLE DIAMETER: 1.182 INCHES MINIMUM AND 1.183 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.438 INCHES NOMINAL IN
STYLE DESIGNATORRECESSED
OUTSIDE DIAMETER2.000 INCHES NOMINAL IN
RECESS DEPTH0.188 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN
RECESS DIAMETER1.697 INCHES MINIMUM AND 1.699 INCHES MAXIMUM IN
SPECIAL FEATURESBOTTOM EDGE CHAMFERED,30.0 DEGREES NOMINAL
HOLE DIAMETER1.182 INCHES MINIMUM AND 1.183 INCHES MAXIMUM IN
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 731A0011F051A?
731A0011F051A is a WASHER,RECESSED.
What is the NSN for 731A0011F051A?
731A0011F051A is cataloged in the U.S. Government catalog under NSN 5310-01-191-0458. 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.