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Technical Data Sheet
PartsTable / COMPONENT / NL1/2"SP
NL1/2"SP ✓ 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 NL1/2"SP is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-688-4932, 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
NL1/2"SP
NSN: 5310-01-688-4932
FSC: 5310
CAGE: 1PUD1 — NORD LOCK INC (USA)
SPECIFICATIONS
Part NumberNL1/2"SP
NSN5310-01-688-4932
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: NL1/2"SP · 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
•
HOLE DIAMETER: 13.5 MILLIMETERS NOMINAL MM
•
HARDNESS RATING: 72.0 ROCKWELL A MINIMUM AND 79.0 ROCKWELL A MAXIMUM
•
OUTSIDE DIAMETER: 25.4 MILLIMETERS NOMINAL MM
•
SURFACE TREATMENT: ZINC OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER13.5 MILLIMETERS NOMINAL MM
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, NORDLOCK
HARDNESS RATING72.0 ROCKWELL A MINIMUM AND 79.0 ROCKWELL A MAXIMUM
END ITEM IDENTIFICATION01-668-1220
OUTSIDE DIAMETER25.4 MILLIMETERS NOMINAL MM
OVERALL HEIGHT3.4 MILLIMETERS NOMINAL MM
SURFACE TREATMENTZINC OVERALL
MATERIALSTEEL OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONISO 2081 INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORTWO PIECE INTERLOCKING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
12422608-017Interchangeable
interchangeable cross-reference
interchangeable
NL12SPInterchangeable
interchangeable cross-reference
interchangeable
12422608-019Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NL1/2"SP?
NL1/2"SP is a NL1/2"SP.
What parts can replace NL1/2"SP?
There are 3 known substitutes for NL1/2"SP: 12422608-017, NL12SP, 12422608-019. Substitute compatibility should be verified for your specific system.
What is the NSN for NL1/2"SP?
NL1/2"SP is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-688-4932. 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