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54556 ✓ 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 BRUSH,ELECTRICAL CONTACT is a the manufacturer industrial component. Key specifications include width: 1.000 INCHES NOMINAL IN, height: 0.292 INCHES NOMINAL IN, length: 1.500 INCHES NOMINAL IN, diameter: 0.3422 INCHES NOMINAL IN, material: ELECTROGRAPHITIC, thickness: 0.500 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 5315-00-292-4068, 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
54556
NSN: 5315-00-292-4068
FSC: 5315
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
width1.000 INCHES NOMINAL IN
height0.292 INCHES NOMINAL IN
length1.500 INCHES NOMINAL IN
diameter0.3422 INCHES NOMINAL IN
materialELECTROGRAPHITIC
thickness0.500 INCHES NOMINAL IN
top_styleFLAT
body_styleRECTANGULAR
end_radius0.0312 INCHES NOMINAL IN
head_styleFLAT CHAMFER
hardness_rating32.0 ROCKWELL C NOMINAL OVERALL
special_featuresGEN SET, CREW SHELTER
NSN5315-00-292-4068
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 54556 · 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
•
DIAMETER: 0.3422 INCHES NOMINAL IN
•
UNDER HEAD LENGTH: 0.3642 INCHES NOMINAL IN
•
END RADIUS: 0.0312 INCHES NOMINAL IN
•
HEIGHT: 0.292 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT
•
PIN HEAD DIAMETER: 0.408 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 8750 OVERALL
•
HARDNESS RATING: 32.0 ROCKWELL C NOMINAL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
DIAMETER0.3422 INCHES NOMINAL IN
UNDER HEAD LENGTH0.3642 INCHES NOMINAL IN
END RADIUS0.0312 INCHES NOMINAL IN
HEIGHT0.292 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT
PIN HEAD DIAMETER0.408 INCHES NOMINAL IN
MATERIALSTEEL COMP 8750 OVERALL
HARDNESS RATING32.0 ROCKWELL C NOMINAL OVERALL
HEAD STYLEFLAT CHAMFER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
S100278-56Interchangeable
interchangeable cross-reference
interchangeable
54556Interchangeable
interchangeable cross-reference
interchangeable
NEMAPUBCB1-1956Interchangeable
interchangeable cross-reference
interchangeable
V3300-E2BG-SAE-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 54556?
54556 is a BRUSH,ELECTRICAL CONTACT.
What parts can replace 54556?
There are 4 known substitutes for 54556: S100278-56, 54556, NEMAPUBCB1-1956 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 54556?
54556 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-292-4068. 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