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Technical Data Sheet
PartsTable / COMPONENT / NL1/2"
NL1/2" ✓ 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" 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 5310-01-687-3250, 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"
NSN: 5310-01-687-3250
FSC: 5310
CAGE: 1PUD1 — NORD LOCK INC (USA)
SPECIFICATIONS
Part NumberNL1/2"
NSN5310-01-687-3250
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: NL1/2" · 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
•
OUTSIDE DIAMETER: 19.50 MILLIMETERS NOMINAL MM
•
HOLE DIAMETER: 13.50 MILLIMETERS NOMINAL MM
•
HARDNESS RATING: 72.0 ROCKWELL A MINIMUM AND 79.0 ROCKWELL A MAXIMUM
•
STYLE DESIGNATOR: TWO PIECE INTERLOCKING
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT2.50 MILLIMETERS NOMINAL MM
OUTSIDE DIAMETER19.50 MILLIMETERS NOMINAL MM
HOLE DIAMETER13.50 MILLIMETERS NOMINAL MM
END ITEM IDENTIFICATION2350-01-668-1220
HARDNESS RATING72.0 ROCKWELL A MINIMUM AND 79.0 ROCKWELL A MAXIMUM
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, NORDLOCK
STYLE DESIGNATORTWO PIECE INTERLOCKING
SURFACE TREATMENTZINC OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONISO 2081 INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
NL-12Interchangeable
interchangeable cross-reference
interchangeable
12422608-016Interchangeable
interchangeable cross-reference
interchangeable
12422608Interchangeable
interchangeable cross-reference
interchangeable
12422608-018Interchangeable
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"?
NL1/2" is a NL1/2".
What parts can replace NL1/2"?
There are 4 known substitutes for NL1/2": NL-12, 12422608-016, 12422608 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NL1/2"?
NL1/2" is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-687-3250. 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