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GPW9579 — Technical Data Sheet

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— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The PIN,SHOULDER,HEADED is a the manufacturer industrial component. Key specifications include height: 0.125 INCHES NOMINAL IN, material: COPPER ALLOY OVERALL, head_style: UNDERCUT UNIVERSAL, first_end_style: RADIUS, style_designator: SHOULDER, first_step_length: 0.031 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System under NSN 5315-00-383-9260, 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
GPW9579
NSN: 5315-00-383-9260
FSC: 5315
CAGE: 23040 — FORD MOTOR CO FORD PARTS AND SERVICE DIV GOVERNMENT PART SALES (USA)
SPECIFICATIONS
height0.125 INCHES NOMINAL IN
materialCOPPER ALLOY OVERALL
head_styleUNDERCUT UNIVERSAL
first_end_styleRADIUS
style_designatorSHOULDER
first_step_length0.031 INCHES NOMINAL IN
pin_head_diameter0.406 INCHES NOMINAL IN
third_step_length0.109 INCHES NOMINAL IN
under_head_length0.234 INCHES NOMINAL IN
second_step_length0.094 INCHES NOMINAL IN
first_step_diameter0.344 INCHES NOMINAL IN
third_step_diameter0.261 INCHES NOMINAL IN
NSN5315-00-383-9260
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: GPW9579 · 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
•
UNDER HEAD LENGTH: 0.234 INCHES NOMINAL IN
•
PIN HEAD DIAMETER: 0.406 INCHES NOMINAL IN
•
SECOND STEP LENGTH: 0.094 INCHES NOMINAL IN
•
HEIGHT: 0.125 INCHES NOMINAL IN
•
THIRD STEP DIAMETER: 0.261 INCHES NOMINAL IN
•
FIRST END STYLE: RADIUS
•
FIRST STEP LENGTH: 0.031 INCHES NOMINAL IN
•
SECOND STEP DIAMETER: 0.275 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
UNDER HEAD LENGTH0.234 INCHES NOMINAL IN
PIN HEAD DIAMETER0.406 INCHES NOMINAL IN
SECOND STEP LENGTH0.094 INCHES NOMINAL IN
HEIGHT0.125 INCHES NOMINAL IN
THIRD STEP DIAMETER0.261 INCHES NOMINAL IN
FIRST END STYLERADIUS
FIRST STEP LENGTH0.031 INCHES NOMINAL IN
SECOND STEP DIAMETER0.275 INCHES NOMINAL IN
THIRD STEP LENGTH0.109 INCHES NOMINAL IN
HEAD STYLEUNDERCUT UNIVERSAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
18750-15InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
673033InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
307ND5059InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
218-21671-3InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
852802InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
116-162InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is GPW9579?
GPW9579 is a PIN,SHOULDER,HEADED.
What parts can replace GPW9579?
There are 17 known substitutes for GPW9579: 18750-15, 673033, 307ND5059 and 14 more. Substitute compatibility should be verified for your specific system.
Is GPW9579 still available?
GPW9579 is currently cancelled.
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Last verified: September 2026