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ST3M679W4 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

ST3M679W4: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 316 OR STEEL OVERALL, hole_diameter: 0.245 INCHES MINIMUM AND 0.245 INCHES MINIMUM AND 0.251 INCHES MAXIMUM0.251 INCHES MAXIMUM IN, outside_diameter: 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN, style_designator: SPRING TENSION, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.032 INCHES MINIMUM AND 0.032 INCHES MINIMUM AND 0.038 INCHES MAXIMUM0.038 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-027-2017, 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
ST3M679W4
NSN: 5310-01-027-2017
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 316 OR STEEL OVERALL
hole_diameter0.245 INCHES MINIMUM AND 0.245 INCHES MINIMUM AND 0.251 INCHES MAXIMUM0.251 INCHES MAXIMUM IN
outside_diameter0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
style_designatorSPRING TENSION
surface_treatmentPASSIVATE OVERALL
material_thickness0.032 INCHES MINIMUM AND 0.032 INCHES MINIMUM AND 0.038 INCHES MAXIMUM0.038 INCHES MAXIMUM IN
NSN5310-01-027-2017
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: ST3M679W4 · 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: SPRING TENSION
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5059,COND A MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059,COND A MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5059,COND A MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-5059,COND A MIL SPEC 4TH MATERIAL RESPONSE OR ASTM A582 ASSN STD 5TH MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.032 INCHES MINIMUM AND 0.032 INCHES MINIMUM AND 0.038 INCHES MAXIMUM0.038 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 316 OR STEEL OVERALL
•
HOLE DIAMETER: 0.245 INCHES MINIMUM AND 0.245 INCHES MINIMUM AND 0.251 INCHES MAXIMUM0.251 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPRING TENSION
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059,COND A MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059,COND A MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5059,COND A MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-5059,COND A MIL SPEC 4TH MATERIAL RESPONSE OR ASTM A582 ASSN STD 5TH MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
MATERIAL THICKNESS0.032 INCHES MINIMUM AND 0.032 INCHES MINIMUM AND 0.038 INCHES MAXIMUM0.038 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 316 OR STEEL OVERALL
HOLE DIAMETER0.245 INCHES MINIMUM AND 0.245 INCHES MINIMUM AND 0.251 INCHES MAXIMUM0.251 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

No substitute or cross-reference records for this part.

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 ST3M679W4?
ST3M679W4 is a WASHER,SPRING TENSION.
What is the NSN for ST3M679W4?
ST3M679W4 is cataloged in the U.S. Government catalog under NSN 5310-01-027-2017. 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.