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A1PB04G ✓ 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 WASHER,LOCK is a the manufacturer industrial component. Key specifications include hole_diameter: 0.115 INCHES MINIMUM IN, outside_diameter: 0.212 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, material_thickness: 0.025 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 5310-01-472-2583, 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
A1PB04G
NSN: 5310-01-472-2583
FSC: 5310
CAGE: 70318 — ALLMETAL SCREW PRODUCTS CORP (USA)
SPECIFICATIONS
hole_diameter0.115 INCHES MINIMUM IN
outside_diameter0.212 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
material_thickness0.025 INCHES NOMINAL IN
NSN5310-01-472-2583
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A1PB04G · 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: 0.212 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
HOLE DIAMETER: 0.115 INCHES MINIMUM IN
•
MATERIAL THICKNESS: 0.025 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER0.212 INCHES MAXIMUM IN
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
HOLE DIAMETER0.115 INCHES MINIMUM IN
MATERIAL THICKNESS0.025 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
012306-0001Interchangeable
interchangeable cross-reference
interchangeable
5945PL1279688Interchangeable
interchangeable cross-reference
interchangeable
70R4-24DCSC0Interchangeable
interchangeable cross-reference
interchangeable
1600-4Interchangeable
interchangeable cross-reference
interchangeable
MIL-T-16049Interchangeable
interchangeable cross-reference
interchangeable
600AJJ4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A1PB04G?
A1PB04G is a WASHER,LOCK.
What parts can replace A1PB04G?
There are 13 known substitutes for A1PB04G: 012306-0001, 5945PL1279688, 70R4-24DCSC0 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A1PB04G?
A1PB04G is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-472-2583. 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