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Technical Data Sheet
PartsTable / COMPONENT / 11040-5
11040-5 ✓ 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

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include material: STEEL, end_item_identification: RED GEAR. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-011-0405, 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
11040-5
NSN: 5310-00-011-0405
FSC: 5310
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL
end_item_identificationRED GEAR
NSN5310-00-011-0405
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 11040-5 · 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: 0.780 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
NONDEFINITIVE SPEC/STD DATA: 1 STYLE AND A CLASS
•
HOLE DIAMETER: 0.446 INCHES MINIMUM AND 0.464 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.085 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
•
MATERIAL: STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1071 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER0.780 INCHES MAXIMUM IN
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
NONDEFINITIVE SPEC/STD DATA1 STYLE AND A CLASS
HOLE DIAMETER0.446 INCHES MINIMUM AND 0.464 INCHES MAXIMUM IN
MATERIAL THICKNESS0.085 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
MATERIALSTEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1071 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
537B21-41Interchangeable
interchangeable cross-reference
interchangeable
8105903Interchangeable
interchangeable cross-reference
interchangeable
2690183-0001Interchangeable
interchangeable cross-reference
interchangeable
11-00282-002Interchangeable
interchangeable cross-reference
interchangeable
6147Interchangeable
interchangeable cross-reference
interchangeable
NY34PCS3340Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11040-5?
11040-5 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace 11040-5?
There are 29 known substitutes for 11040-5: 537B21-41, 8105903, 2690183-0001 and 26 more. Substitute compatibility should be verified for your specific system.
Is 11040-5 still available?
11040-5 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