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Technical Data Sheet
PartsTable / COMPONENT / 11582611-5
11582611-5 ✓ 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

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.210 INCHES NOMINAL IN, outside_diameter: 0.350 INCHES NOMINAL IN, style_designator: SERRATED, surface_treatment: ZINC OVERALL, material_thickness: 0.063 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-686-4974, 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
11582611-5
NSN: 5310-01-686-4974
FSC: 5310
CAGE: 1NUW7 — US ARMY BENET LABORATORIES RDAR-WSB-O (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.210 INCHES NOMINAL IN
outside_diameter0.350 INCHES NOMINAL IN
style_designatorSERRATED
surface_treatmentZINC OVERALL
material_thickness0.063 INCHES NOMINAL IN
end_item_identificationHOWITZER, 155MM, M777E1 MM
nondefinitive_spec/std_data0.001LB WEIGHT LBS
part_name_assigned_by_controlling_agencyWASHER, NORD LOCK
NSN5310-01-686-4974
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 11582611-5 · 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: 0.350 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.210 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.063 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SERRATED
•
MATERIAL: STEEL OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 0.001LB WEIGHT LBS
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER0.350 INCHES NOMINAL IN
HOLE DIAMETER0.210 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, NORD LOCK
MATERIAL THICKNESS0.063 INCHES NOMINAL IN
END ITEM IDENTIFICATIONHOWITZER, 155MM, M777E1 MM
STYLE DESIGNATORSERRATED
MATERIALSTEEL OVERALL
NONDEFINITIVE SPEC/STD DATA0.001LB WEIGHT LBS
SURFACE TREATMENTZINC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
HLS-1/4Interchangeable
interchangeable cross-reference
interchangeable
11582611Interchangeable
interchangeable cross-reference
interchangeable
11582611-250Interchangeable
interchangeable cross-reference
interchangeable
NL5Interchangeable
Same NIIN cross-reference
interchangeable
13064474Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11582611-5?
11582611-5 is a WASHER,LOCK.
What parts can replace 11582611-5?
There are 5 known substitutes for 11582611-5: HLS-1/4, 11582611, 11582611-250 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 11582611-5?
11582611-5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-686-4974. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026