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FR31350 ✓ 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 FR31350 is a the manufacturer industrial component. Key specifications include material: STEEL LOCATION NOT OTHERWISE SPECIFIED, head_style: FLAT, point_style: DIAMOND, shank_style: SMOOTH ROUND, shank_diameter: 0.131 INCHES NOMINAL IN, fastener_length: 3.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-576-8966, 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
FR31350
NSN: 5315-01-576-8966
FSC: 5315
CAGE: 60933 — PORTER CABLE/DELTA (USA)
SPECIFICATIONS
materialSTEEL LOCATION NOT OTHERWISE SPECIFIED
head_styleFLAT
point_styleDIAMOND
shank_styleSMOOTH ROUND
shank_diameter0.131 INCHES NOMINAL IN
fastener_length3.500 INCHES NOMINAL IN
special_features.131 X 3 1/2 INCH X 22 DEGREE X 16D ROUND HEAD,SMOOTH SHANK NAILS,COATED IN
unit_of_issue_weight56.62 POUNDS LBS
NSN5315-01-576-8966
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: FR31350 · 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
•
FASTENER LENGTH: 3.500 INCHES NOMINAL IN
•
SHANK DIAMETER: 0.131 INCHES NOMINAL IN
•
UNIT OF ISSUE WEIGHT: 56.62 POUNDS LBS
•
MATERIAL: STEEL LOCATION NOT OTHERWISE SPECIFIED
•
POINT STYLE: DIAMOND
•
HEAD STYLE: FLAT
•
SHANK STYLE: SMOOTH ROUND
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH3.500 INCHES NOMINAL IN
SHANK DIAMETER0.131 INCHES NOMINAL IN
UNIT OF ISSUE WEIGHT56.62 POUNDS LBS
MATERIALSTEEL LOCATION NOT OTHERWISE SPECIFIED
POINT STYLEDIAMOND
HEAD STYLEFLAT
SPECIAL FEATURES.131 X 3 1/2 INCH X 22 DEGREE X 16D ROUND HEAD,SMOOTH SHANK NAILS,COATED IN
SHANK STYLESMOOTH ROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
14676PInterchangeable
interchangeable cross-reference
interchangeable
SK14682Interchangeable
interchangeable cross-reference
interchangeable
10097Interchangeable
interchangeable cross-reference
interchangeable
C429Interchangeable
interchangeable cross-reference
interchangeable
21213Interchangeable
interchangeable cross-reference
interchangeable
310-RTInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FR31350?
FR31350 is a FR31350.
What parts can replace FR31350?
There are 14 known substitutes for FR31350: 14676P, SK14682, 10097 and 11 more. Substitute compatibility should be verified for your specific system.
Is FR31350 still available?
FR31350 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026