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PartsTable / COMPONENT / H3-139
H3-139 ✓ Verified by PartsTable
— · 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,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, first_end_style: CHAMFERED, second_end_style: SQUARE, special_features: BLACK OXIDE FINISH; SPHERODIZE ANNEALED, surface_treatment: OXIDE OVERALL, pin_overall_length: 0.250 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-519-0194, 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
H3-139
NSN: 5315-01-519-0194
FSC: 5315
CAGE: 05624 — GE AVIATION SYSTEMS LLC DBA GE AVIATION SYSTEMS LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
first_end_styleCHAMFERED
second_end_styleSQUARE
special_featuresBLACK OXIDE FINISH; SPHERODIZE ANNEALED
surface_treatmentOXIDE OVERALL
pin_overall_length0.250 INCHES NOMINAL IN
pin_overall_diameter0.2500 INCHES NOMINAL IN
first_end_taper_angle15.0 DEGREES NOMINAL
first_end_taper_length0.020 INCHES NOMINAL IN
end_item_identificationB-52
first_end_corner_radius0.015 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
material_document_and_classificationASTM A686 GR C ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5315-01-519-0194
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: H3-139 · 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
•
FIRST END TAPER ANGLE: 15.0 DEGREES NOMINAL
•
MATERIAL: STEEL OVERALL
•
SECOND END STYLE: SQUARE
•
PIN OVERALL DIAMETER: 0.2500 INCHES NOMINAL IN
•
FIRST END STYLE: CHAMFERED
•
PIN OVERALL LENGTH: 0.250 INCHES NOMINAL IN
•
FIRST END TAPER LENGTH: 0.020 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
FIRST END TAPER ANGLE15.0 DEGREES NOMINAL
END ITEM IDENTIFICATIONB-52
MATERIALSTEEL OVERALL
SECOND END STYLESQUARE
PIN OVERALL DIAMETER0.2500 INCHES NOMINAL IN
FIRST END STYLECHAMFERED
PIN OVERALL LENGTH0.250 INCHES NOMINAL IN
FIRST END TAPER LENGTH0.020 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDNOT IDENTICAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
17420C6Interchangeable
interchangeable cross-reference
interchangeable
170571R91Interchangeable
interchangeable cross-reference
interchangeable
65167R1Interchangeable
interchangeable cross-reference
interchangeable
X28Interchangeable
interchangeable cross-reference
interchangeable
28Interchangeable
interchangeable cross-reference
interchangeable
02-513-140Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H3-139?
H3-139 is a PIN,STRAIGHT,HEADLESS.
What parts can replace H3-139?
There are 8 known substitutes for H3-139: 17420C6, 170571R91, 65167R1 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for H3-139?
H3-139 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-519-0194. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026