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BN 790 M5 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

BN 790 M5: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 5.3 MILLIMETERS NOMINAL MM, hardness_rating: 350.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 425.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM, outside_diameter: 10.0 MILLIMETERS MAXIMUM MM, style_designator: FLAT INTERNAL TEETH, surface_treatment: ZINC OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-620-5757, 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
BN 790 M5
NSN: 5310-01-620-5757
FSC: 5310 — Nuts and Washers
CAGE: 1CJ86 — BOSSARD INTL INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter5.3 MILLIMETERS NOMINAL MM
hardness_rating350.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 425.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM
outside_diameter10.0 MILLIMETERS MAXIMUM MM
style_designatorFLAT INTERNAL TEETH
surface_treatmentZINC OVERALL
material_thickness0.6 MILLIMETERS NOMINAL MM
NSN5310-01-620-5757
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BN 790 M5 · 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
•
HARDNESS RATING: 350.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 425.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
OUTSIDE DIAMETER: 10.0 MILLIMETERS MAXIMUM MM
•
MATERIAL THICKNESS: 0.6 MILLIMETERS NOMINAL MM
•
SURFACE TREATMENT: ZINC OVERALL
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 5.3 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
HARDNESS RATING350.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 425.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM
STYLE DESIGNATORFLAT INTERNAL TEETH
OUTSIDE DIAMETER10.0 MILLIMETERS MAXIMUM MM
MATERIAL THICKNESS0.6 MILLIMETERS NOMINAL MM
SURFACE TREATMENTZINC OVERALL
MATERIALSTEEL OVERALL
HOLE DIAMETER5.3 MILLIMETERS NOMINAL MM
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BN 790 M5?
BN 790 M5 is a WASHER,LOCK.
What is the NSN for BN 790 M5?
BN 790 M5 is cataloged in the U.S. Government catalog under NSN 5310-01-620-5757. 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.