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T7137 ✓ 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 material: STEEL OVERALL, hole_diameter: 0.194 INCHES MINIMUM IN, outside_diameter: 0.353 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: ZINC AND CHROMATE OVERALL, material_thickness: 0.056 INCHES MINIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-198-3711, 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
T7137
NSN: 5310-00-198-3711
FSC: 5310
CAGE: 73782 — TOWMOTOR CORP DALLAS PLANT SUB OF CATERPILLAR TRACTOR CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.194 INCHES MINIMUM IN
outside_diameter0.353 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentZINC AND CHROMATE OVERALL
material_thickness0.056 INCHES MINIMUM IN
NSN5310-00-198-3711
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: T7137 · 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
•
MATERIAL THICKNESS: 0.056 INCHES MINIMUM IN
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
OUTSIDE DIAMETER: 0.353 INCHES MAXIMUM IN
•
SURFACE TREATMENT: ZINC AND CHROMATE OVERALL
•
HOLE DIAMETER: 0.194 INCHES MINIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.056 INCHES MINIMUM IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER0.353 INCHES MAXIMUM IN
SURFACE TREATMENTZINC AND CHROMATE OVERALL
HOLE DIAMETER0.194 INCHES MINIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
LS1198Interchangeable
interchangeable cross-reference
interchangeable
CVC1638Interchangeable
interchangeable cross-reference
interchangeable
AMS-QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
5509-2Interchangeable
interchangeable cross-reference
interchangeable
L218681-2Interchangeable
interchangeable cross-reference
interchangeable
5409-0022Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is T7137?
T7137 is a WASHER,LOCK.
What parts can replace T7137?
There are 24 known substitutes for T7137: LS1198, CVC1638, AMS-QQ-A-200/3 and 21 more. Substitute compatibility should be verified for your specific system.
Is T7137 still available?
T7137 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