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PartsTable / COMPONENT / 10RT21
10RT21 ✓ 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: 0.250 INCHES NOMINAL IN, outside_diameter: 0.750 INCHES NOMINAL IN, end_item_identification: NSN 2320-01-097-0260 HEMTT (HEAVY EXPANDED MOBILITY TACTICAL TRUCK). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-081-2523, 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
10RT21
NSN: 5310-01-081-2523
FSC: 5310
CAGE: 45152 — OSHKOSH CORP (USA)
SPECIFICATIONS
hole_diameter0.250 INCHES NOMINAL IN
outside_diameter0.750 INCHES NOMINAL IN
end_item_identificationNSN 2320-01-097-0260 HEMTT (HEAVY EXPANDED MOBILITY TACTICAL TRUCK)
NSN5310-01-081-2523
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10RT21 · 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: 0.250 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER0.250 INCHES NOMINAL IN
END ITEM IDENTIFICATIONNSN 2320-01-097-0260 HEMTT (HEAVY EXPANDED MOBILITY TACTICAL TRUCK)
OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
15810-5Interchangeable
interchangeable cross-reference
interchangeable
JB1632.NP/MPInterchangeable
interchangeable cross-reference
interchangeable
B107.52Interchangeable
interchangeable cross-reference
interchangeable
500-1 1-2Interchangeable
interchangeable cross-reference
interchangeable
FIG B-105 SZ 1 1/2 INInterchangeable
interchangeable cross-reference
interchangeable
2125-1 1-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10RT21?
10RT21 is a WASHER,LOCK.
What parts can replace 10RT21?
There are 14 known substitutes for 10RT21: 15810-5, JB1632.NP/MP, B107.52 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10RT21?
10RT21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-081-2523. 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