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PartsTable / COMPONENT / 933B055381
933B055381 ✓ 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,GROOVED,HEADED is a the manufacturer industrial component. Key specifications include height: 0.037 INCHES NOMINAL IN, diameter: 0.1245 INCHES MINIMUM AND 0.1247 INCHES MAXIMUM IN, material: STEEL COMP 303 OVERALL, head_style: FLAT, surface_finish: 32.0 MICROINCHES LONG SHANK, undercut_width: 0.030 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 5315-01-094-9076, 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
933B055381
NSN: 5315-01-094-9076
FSC: 5315
CAGE: 34228 — L3 TECHNOLOGIES, INC. DIV L3 KEO (USA)
SPECIFICATIONS
height0.037 INCHES NOMINAL IN
diameter0.1245 INCHES MINIMUM AND 0.1247 INCHES MAXIMUM IN
materialSTEEL COMP 303 OVERALL
head_styleFLAT
surface_finish32.0 MICROINCHES LONG SHANK
undercut_width0.030 INCHES NOMINAL IN
first_end_styleSQUARE
special_features0.062 IN DIA HOLE DRILLED 0.046 IN DEEP THRU LONGITUDINAL CENTERL1NE ON BODY END IN
style_designatorGROOVE
pin_head_diameter0.1245 INCHES MINIMUM AND 0.1247 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
under_head_length0.183 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
NSN5315-01-094-9076
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 933B055381 · 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
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
SURFACE FINISH: 32.0 MICROINCHES LONG SHANK
•
STYLE DESIGNATOR: GROOVE
•
HEIGHT: 0.037 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
PIN HEAD DIAMETER: 0.1245 INCHES MINIMUM AND 0.1247 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTPASSIVATE OVERALL
SURFACE FINISH32.0 MICROINCHES LONG SHANK
STYLE DESIGNATORGROOVE
HEIGHT0.037 INCHES NOMINAL IN
SURFACE FINISH32.0 MICROINCHES HEAD OUTSIDE DIAMETER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
PIN HEAD DIAMETER0.1245 INCHES MINIMUM AND 0.1247 INCHES MAXIMUM IN
MATERIALSTEEL COMP 303 OVERALL
SPECIAL FEATURES0.062 IN DIA HOLE DRILLED 0.046 IN DEEP THRU LONGITUDINAL CENTERL1NE ON BODY END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
SE121-1043Interchangeable
interchangeable cross-reference
interchangeable
55381Interchangeable
interchangeable cross-reference
interchangeable
X69-210Interchangeable
interchangeable cross-reference
interchangeable
55388Interchangeable
interchangeable cross-reference
interchangeable
55420Interchangeable
interchangeable cross-reference
interchangeable
4131161Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 933B055381?
933B055381 is a PIN,GROOVED,HEADED.
What parts can replace 933B055381?
There are 8 known substitutes for 933B055381: SE121-1043, 55381, X69-210 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 933B055381?
933B055381 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-094-9076. 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