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5310PL0212538 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5310PL0212538: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: COBALT COMP L-605 OR STEEL COMP 302 OVERALL, hole_diameter: 0.192 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES BOTTOM, hardness_rating: 29.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM, outside_diameter: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN, style_designator: RECESSED BOTH SIDES. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-187-9727, 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
5310PL0212538
NSN: 5310-00-187-9727
FSC: 5310 — Nuts and Washers
CAGE: 9009H — JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX (POL)
SPECIFICATIONS
materialCOBALT COMP L-605 OR STEEL COMP 302 OVERALL
hole_diameter0.192 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES BOTTOM
hardness_rating29.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
outside_diameter0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
style_designatorRECESSED BOTH SIDES
top_recess_angle86.0 DEGREES MINIMUM AND 94.0 DEGREES MAXIMUM
material_thickness0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
bottom_recess_angle86.0 DEGREES MINIMUM AND 94.0 DEGREES MAXIMUM
top_recess_diameter0.236 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
bottom_recess_diameter0.236 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
material_document_and_classificationAMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5537 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-187-9727
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5310PL0212538 · 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: 63.0 MICROINCHES BOTTOM
•
TOP RECESS DIAMETER: 0.236 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
BOTTOM RECESS DIAMETER: 0.236 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
HARDNESS RATING: 29.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
•
TOP RECESS ANGLE: 86.0 DEGREES MINIMUM AND 94.0 DEGREES MAXIMUM
•
STYLE DESIGNATOR: RECESSED BOTH SIDES
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5537 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES BOTTOM
SURFACE FINISH63.0 MICROINCHES TOP
TOP RECESS DIAMETER0.236 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
BOTTOM RECESS DIAMETER0.236 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
HARDNESS RATING29.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
TOP RECESS ANGLE86.0 DEGREES MINIMUM AND 94.0 DEGREES MAXIMUM
STYLE DESIGNATORRECESSED BOTH SIDES
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5537 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
MATERIAL THICKNESS0.075 INCHES MINIMUM AND 0.085 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 3
10116659Reference document
Same NSN cross-reference
Reference document — Informative reference only
MS9768-09Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
9682013413Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5310PL0212538?
5310PL0212538 is a WASHER,RECESSED.
What parts can replace 5310PL0212538?
There are 3 known substitutes for 5310PL0212538: 10116659, MS9768-09, 9682013413. Substitute compatibility should be verified for your specific system.
What is the NSN for 5310PL0212538?
5310PL0212538 is cataloged in the U.S. Government catalog under NSN 5310-00-187-9727. 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.