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K39274-04 — NUT,SHEET SPRING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

K39274-04: NUT,SHEET SPRING.

The NUT,SHEET SPRING is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: SHEET SPRING, nut_width: 0.225 INCHES NOMINAL IN, nut_length: 0.342 INCHES NOMINAL IN, panel_thickness: 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN, special_features: 0.112-40 UNJC 3B SELFLOCKING DEVICE ON CLIP. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-331-6173, 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
K39274-04
NSN: 5310-00-331-6173
FSC: 5310 — Nuts and Washers
CAGE: 15653 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_styleSHEET SPRING
nut_width0.225 INCHES NOMINAL IN
nut_length0.342 INCHES NOMINAL IN
panel_thickness0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
special_features0.112-40 UNJC 3B SELFLOCKING DEVICE ON CLIP
material_thickness0.020 INCHES NOMINAL IN
gripping_prong_length0.322 INCHES MINIMUM AND 0.347 INCHES MAXIMUM IN
nut_mounting_provisionGRIPPING PRONGS
gripping_prong_quantity2
mating_member_diameter_accommodated0.112 INCHES NOMINAL IN
material_document_and_classificationAMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-331-6173
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: K39274-04 · 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
•
NUT WIDTH: 0.225 INCHES NOMINAL IN
•
NUT LENGTH: 0.342 INCHES NOMINAL IN
•
GRIPPING PRONG LENGTH: 0.322 INCHES MINIMUM AND 0.347 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL THICKNESS: 0.020 INCHES NOMINAL IN
•
GRIPPING PRONG QUANTITY: 2
•
PANEL THICKNESS: 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
•
MATING MEMBER DIAMETER ACCOMMODATED: 0.112 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
NUT WIDTH0.225 INCHES NOMINAL IN
NUT LENGTH0.342 INCHES NOMINAL IN
GRIPPING PRONG LENGTH0.322 INCHES MINIMUM AND 0.347 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.020 INCHES NOMINAL IN
GRIPPING PRONG QUANTITY2
PANEL THICKNESS0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
MATING MEMBER DIAMETER ACCOMMODATED0.112 INCHES NOMINAL IN
SPECIAL FEATURES0.112-40 UNJC 3B SELFLOCKING DEVICE ON CLIP
NUT STYLESHEET SPRING
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
NU15-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is K39274-04?
K39274-04 is a NUT,SHEET SPRING.
What parts can replace K39274-04?
There is 1 known substitute for K39274-04: NU15-1. Substitute compatibility should be verified for your specific system.
What is the NSN for K39274-04?
K39274-04 is cataloged in the U.S. Government catalog under NSN 5310-00-331-6173. 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.