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5L7888 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5L7888: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, recess_depth: 0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN, hole_diameter: 2.531 INCHES MINIMUM AND 2.537 INCHES MAXIMUM IN, outside_diameter: 3.231 INCHES MINIMUM AND 3.237 INCHES MAXIMUM IN, style_designator: RECESSED BOTH SIDES, top_recess_angle: 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-119-4644, 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
5L7888
NSN: 5310-00-119-4644
FSC: 5310 — Nuts and Washers
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
recess_depth0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
hole_diameter2.531 INCHES MINIMUM AND 2.537 INCHES MAXIMUM IN
outside_diameter3.231 INCHES MINIMUM AND 3.237 INCHES MAXIMUM IN
style_designatorRECESSED BOTH SIDES
top_recess_angle89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
material_thickness0.153 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
bottom_recess_angle89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
top_recess_diameter2.591 INCHES MINIMUM AND 2.597 INCHES MAXIMUM IN
bottom_recess_diameter2.591 INCHES MINIMUM AND 2.597 INCHES MAXIMUM IN
material_document_and_classificationIE357,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-119-4644
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5L7888 · 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
•
TOP RECESS DIAMETER: 2.591 INCHES MINIMUM AND 2.597 INCHES MAXIMUM IN
•
BOTTOM RECESS DIAMETER: 2.591 INCHES MINIMUM AND 2.597 INCHES MAXIMUM IN
•
TOP RECESS ANGLE: 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
•
STYLE DESIGNATOR: RECESSED BOTH SIDES
•
MATERIAL DOCUMENT AND CLASSIFICATION: IE357,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 3.231 INCHES MINIMUM AND 3.237 INCHES MAXIMUM IN
•
RECESS DEPTH: 0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.153 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
TOP RECESS DIAMETER2.591 INCHES MINIMUM AND 2.597 INCHES MAXIMUM IN
BOTTOM RECESS DIAMETER2.591 INCHES MINIMUM AND 2.597 INCHES MAXIMUM IN
TOP RECESS ANGLE89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
STYLE DESIGNATORRECESSED BOTH SIDES
MATERIAL DOCUMENT AND CLASSIFICATIONIE357,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER3.231 INCHES MINIMUM AND 3.237 INCHES MAXIMUM IN
RECESS DEPTH0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
MATERIAL THICKNESS0.153 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
BOTTOM RECESS ANGLE89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
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 1
5L7888-00Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5L7888?
5L7888 is a WASHER,RECESSED.
What parts can replace 5L7888?
There is 1 known substitute for 5L7888: 5L7888-00. Substitute compatibility should be verified for your specific system.
What is the NSN for 5L7888?
5L7888 is cataloged in the U.S. Government catalog under NSN 5310-00-119-4644. 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.