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HS5393S4 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

HS5393S4: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OR STEEL COMP 1050 OVERALL, recess_angle: 90.0 DEGREES NOMINAL, hole_diameter: 0.251 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN, hardness_rating: 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM, recess_diameter: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN, outside_diameter: 0.486 INCHES MINIMUM AND 0.496 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-306-2807, 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
HS5393S4
NSN: 5310-01-306-2807
FSC: 5310 — Nuts and Washers
CAGE: 8V613 — THE BOEING COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OR STEEL COMP 1050 OVERALL
recess_angle90.0 DEGREES NOMINAL
hole_diameter0.251 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
hardness_rating39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
recess_diameter0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
outside_diameter0.486 INCHES MINIMUM AND 0.496 INCHES MAXIMUM IN
style_designatorRECESSED
precious_materialSILVER
surface_treatmentSILVER OVERALL
material_thickness0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
precious_material_and_locationOUTSIDE SURFACE SILVER
material_document_and_classificationMIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 5085 ASSN STD 2ND MATERIAL RESPONSE OVERALL
NSN5310-01-306-2807
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: HS5393S4 · 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 TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
PRECIOUS MATERIAL: SILVER
•
HARDNESS RATING: 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 5085 ASSN STD 2ND MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.486 INCHES MINIMUM AND 0.496 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
•
RECESS DIAMETER: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
PRECIOUS MATERIALSILVER
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 5085 ASSN STD 2ND MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.486 INCHES MINIMUM AND 0.496 INCHES MAXIMUM IN
MATERIAL THICKNESS0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
RECESS DIAMETER0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
SURFACE TREATMENTSILVER OVERALL
PRECIOUS MATERIAL AND LOCATIONOUTSIDE SURFACE SILVER
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 4
HS53930S4Reference document
Same NSN cross-reference
Reference document — Secondary reference
WC22S-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AS102584-S4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
SL207088-S4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 HS5393S4?
HS5393S4 is a WASHER,RECESSED.
What parts can replace HS5393S4?
There are 4 known substitutes for HS5393S4: HS53930S4, WC22S-4, AS102584-S4 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HS5393S4?
HS5393S4 is cataloged in the U.S. Government catalog under NSN 5310-01-306-2807. 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.