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Technical Data Sheet
PartsTable / COMPONENT / 11B41
11B41 ✓ 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 PIN,SHOULDER,HEADED is a the manufacturer industrial component. Key specifications include height: 0.078 INCHES NOMINAL IN, material: ALUMINUM ALLOY 6061 OVERALL, head_style: ROUND, first_end_style: CHAMFERED, style_designator: SHOULDER, first_step_length: 0.125 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-366-6569, 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
11B41
NSN: 5315-00-366-6569
FSC: 5315
CAGE: 71500 — ACF INDUSTRIES INC CARTER CARBURETOR DIV
SPECIFICATIONS
height0.078 INCHES NOMINAL IN
materialALUMINUM ALLOY 6061 OVERALL
head_styleROUND
first_end_styleCHAMFERED
style_designatorSHOULDER
first_step_length0.125 INCHES NOMINAL IN
pin_head_diameter0.234 INCHES NOMINAL IN
under_head_length0.203 INCHES NOMINAL IN
second_step_length0.078 INCHES NOMINAL IN
first_step_diameter0.165 INCHES NOMINAL IN
second_step_diameter0.155 INCHES NOMINAL IN
first_end_taper_angle30.0 DEGREES NOMINAL
NSN5315-00-366-6569
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 11B41 · 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
•
SECOND STEP DIAMETER: 0.155 INCHES NOMINAL IN
•
FIRST STEP DIAMETER: 0.165 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SHOULDER
•
UNDER HEAD LENGTH: 0.203 INCHES NOMINAL IN
•
FIRST STEP LENGTH: 0.125 INCHES NOMINAL IN
•
FIRST END STYLE: CHAMFERED
•
HEAD STYLE: ROUND
•
PIN HEAD DIAMETER: 0.234 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SECOND STEP DIAMETER0.155 INCHES NOMINAL IN
FIRST STEP DIAMETER0.165 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDER
UNDER HEAD LENGTH0.203 INCHES NOMINAL IN
FIRST STEP LENGTH0.125 INCHES NOMINAL IN
FIRST END STYLECHAMFERED
HEAD STYLEROUND
PIN HEAD DIAMETER0.234 INCHES NOMINAL IN
SECOND STEP LENGTH0.078 INCHES NOMINAL IN
HEIGHT0.078 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
852800Interchangeable
interchangeable cross-reference
interchangeable
A1171Interchangeable
interchangeable cross-reference
interchangeable
56283Interchangeable
interchangeable cross-reference
interchangeable
11B41Interchangeable
interchangeable cross-reference
interchangeable
406LXInterchangeable
interchangeable cross-reference
interchangeable
SM-B-187467Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11B41?
11B41 is a PIN,SHOULDER,HEADED.
What parts can replace 11B41?
There are 10 known substitutes for 11B41: 852800, A1171, 56283 and 7 more. Substitute compatibility should be verified for your specific system.
Is 11B41 still available?
11B41 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