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Technical Data Sheet
PartsTable / COMPONENT / 7411378
7411378 ✓ 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,KEY is a the manufacturer industrial component. Key specifications include hole_diameter: 2.650 INCHES MINIMUM AND 2.660 INCHES MAXIMUM IN, outside_diameter: 3.375 INCHES NOMINAL IN, style_designator: KEY, material_thickness: 0.060 INCHES NOMINAL IN, external_key_quantity: 11, external_straight_key_width: 0.438 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-741-1378, 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
7411378
NSN: 5310-00-741-1378
FSC: 5310
CAGE: 1CSL0 — SCHUTT INDUSTRIES OF CLINTONVILLE, WIS., INC. DIV SCHUTT INDUSTRIES OF CLINTONVILLE, WI INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL OVERALL
hole_diameter2.650 INCHES MINIMUM AND 2.660 INCHES MAXIMUM IN
outside_diameter3.375 INCHES NOMINAL IN
style_designatorKEY
material_thickness0.060 INCHES NOMINAL IN
external_key_quantity11
internal_key_quantity1
end_item_identificationW/S:CARGO, TRAILER, M105A3; CHASIS, TRLR, GP, 3 1/2T, 2-WHL, TAM D00807; TRAILER TANK, WATER 400 GAL, M149A2; GUIDED MISSILE, INTERCEPT; MISSILE, LANCE; TRLR, CARGO, 3/4T, 2WHL, TAM D08607
external_straight_key_width0.438 INCHES NOMINAL IN
internal_straight_key_width0.335 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
overall_distance_including_keys3.875 INCHES NOMINAL IN
distance_from_centerline_to_top_of_internal_key1.185 INCHES NOMINAL IN
NSN5310-00-741-1378
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7411378 · 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 DOCUMENT AND CLASSIFICATION: QQ-S-698 TP 2 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-698 TP 2 FED SPEC 2ND MATERIAL RESPONSE OR QQ-698 TP 2 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-698 TP 2 FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-698 TP 2 FED SPEC 5TH MATERIAL RESPONSE OR QQ-S-698 T+2 FED SPEC 6TH MATERIAL RESPONSE OR QQ-S-698 TP 5 FED SPEC 7TH MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: KEY
•
MATERIAL: STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL OVERALL
•
OUTSIDE DIAMETER: 3.375 INCHES NOMINAL IN
•
INTERNAL KEY QUANTITY: 1
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 1.185 INCHES NOMINAL IN
•
EXTERNAL KEY QUANTITY: 11
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-698 TP 2 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-698 TP 2 FED SPEC 2ND MATERIAL RESPONSE OR QQ-698 TP 2 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-698 TP 2 FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-698 TP 2 FED SPEC 5TH MATERIAL RESPONSE OR QQ-S-698 T+2 FED SPEC 6TH MATERIAL RESPONSE OR QQ-S-698 TP 5 FED SPEC 7TH MATERIAL RESPONSE OVERALL
STYLE DESIGNATORKEY
MATERIALSTEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL OVERALL
OUTSIDE DIAMETER3.375 INCHES NOMINAL IN
INTERNAL KEY QUANTITY1
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY1.185 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY11
END ITEM IDENTIFICATIONW/S:CARGO, TRAILER, M105A3; CHASIS, TRLR, GP, 3 1/2T, 2-WHL, TAM D00807; TRAILER TANK, WATER 400 GAL, M149A2; GUIDED MISSILE, INTERCEPT; MISSILE, LANCE; TRLR, CARGO, 3/4T, 2WHL, TAM D08607
OVERALL DISTANCE INCLUDING KEYS3.875 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH0.438 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
1209-0014DInterchangeable
interchangeable cross-reference
interchangeable
209-14Interchangeable
interchangeable cross-reference
interchangeable
209-14DInterchangeable
interchangeable cross-reference
interchangeable
550 7/32Interchangeable
interchangeable cross-reference
interchangeable
NAS907 TYJSZ7/32Interchangeable
interchangeable cross-reference
interchangeable
33764Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7411378?
7411378 is a WASHER,KEY.
What parts can replace 7411378?
There are 14 known substitutes for 7411378: 1209-0014D, 209-14, 209-14D and 11 more. Substitute compatibility should be verified for your specific system.
Is 7411378 still available?
7411378 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