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Technical Data Sheet
PartsTable / COMPONENT / R126
R126 ✓ 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 CONNECTOR,PLUG,ELECTRICAL is a the manufacturer industrial component. Key specifications include radius: 0.077 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN, material: STEEL OVERALL, overall_width: 0.154 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN, overall_height: 0.220 INCHES MINIMUM AND 0.222 INCHES MAXIMUM IN, overall_length: 0.565 INCHES MINIMUM AND 0.575 INCHES MAXIMUM IN, hardness_rating: 35.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-276-4415, 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
R126
NSN: 5315-00-276-4415
FSC: 5315
CAGE: 59875 — EATON CORP DBA EATON AEROSPACE JACKSON (USA)
SPECIFICATIONS
radius0.077 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
materialSTEEL OVERALL
overall_width0.154 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
overall_height0.220 INCHES MINIMUM AND 0.222 INCHES MAXIMUM IN
overall_length0.565 INCHES MINIMUM AND 0.575 INCHES MAXIMUM IN
hardness_rating35.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
starting_edge_shapeSTRAIGHT
end_item_identificationBOAT, WORK, 45 FOOT, 45WB0801 FT
part_name_assigned_by_controlling_agencyRADOME SCANNER 8-WAY CONNECTOR
NSN5315-00-276-4415
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: R126 · 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
•
RADIUS: 0.077 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
•
HARDNESS RATING: 35.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL: STEEL OVERALL
•
STARTING EDGE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS (FLIS)
RADIUS0.077 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
OVERALL LENGTH0.565 INCHES MINIMUM AND 0.575 INCHES MAXIMUM IN
OVERALL HEIGHT0.220 INCHES MINIMUM AND 0.222 INCHES MAXIMUM IN
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
OVERALL WIDTH0.154 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
STARTING EDGE SHAPESTRAIGHT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
52103Interchangeable
interchangeable cross-reference
interchangeable
52105Interchangeable
interchangeable cross-reference
interchangeable
WM-MSInterchangeable
interchangeable cross-reference
interchangeable
52.103Interchangeable
interchangeable cross-reference
interchangeable
58-12Interchangeable
interchangeable cross-reference
interchangeable
R126Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R126?
R126 is a CONNECTOR,PLUG,ELECTRICAL.
What parts can replace R126?
There are 27 known substitutes for R126: 52103, 52105, WM-MS and 24 more. Substitute compatibility should be verified for your specific system.
Is R126 still available?
R126 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