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42312-393 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

42312-393: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OR STEEL COMP 347 OVERALL, recess_depth: 0.135 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN, hole_diameter: 0.220 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN, overall_height: 0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN, outside_diameter: 0.780 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN, style_designator: RECESSED. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-174-8254, 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
42312-393
NSN: 5310-01-174-8254
FSC: 5310 — Nuts and Washers
CAGE: 82402 — TRIUMPH GEAR SYSTEMS INC DBA TRIUMPH GEAR SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OR STEEL COMP 347 OVERALL
recess_depth0.135 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN
hole_diameter0.220 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
overall_height0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
outside_diameter0.780 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN
style_designatorRECESSED
surface_treatmentPASSIVATE OVERALL
material_thickness0.137 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN
material_document_and_classificationQQ-S-763,COND A FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-763,COND A FED SPEC 2ND MATERIAL RESPONSE OVERALL
NSN5310-01-174-8254
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 42312-393 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,COND A FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-763,COND A FED SPEC 2ND MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.780 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN
•
RECESS DEPTH: 0.135 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.137 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 316 OR STEEL COMP 347 OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,COND A FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-763,COND A FED SPEC 2ND MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.780 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN
RECESS DEPTH0.135 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN
MATERIAL THICKNESS0.137 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 316 OR STEEL COMP 347 OVERALL
HOLE DIAMETER0.220 INCHES MINIMUM AND 0.230 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 1
10110042Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 42312-393?
42312-393 is a WASHER,RECESSED.
What parts can replace 42312-393?
There is 1 known substitute for 42312-393: 10110042. Substitute compatibility should be verified for your specific system.
What is the NSN for 42312-393?
42312-393 is cataloged in the U.S. Government catalog under NSN 5310-01-174-8254. 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.