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Technical Data Sheet
PartsTable / COMPONENT / 541A
541A ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The LIGHT,MARKER,CLEARANCE is a the manufacturer industrial component. Key specifications include width: 0.660 INCHES NOMINAL IN, height: 2.620 INCHES NOMINAL IN, material: COPPER ALLOY, bolt_type: SINGLE BEVEL NONREVERSIBLE, face_shape: FLAT, action_type: SPRING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-297-1054, 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
541A
NSN: 5325-00-297-1054
FSC: 5325
CAGE: 61864 — TRW ASSEMBLIES AND FASTENERS GROUP (USA)
SPECIFICATIONS
width0.660 INCHES NOMINAL IN
height2.620 INCHES NOMINAL IN
materialCOPPER ALLOY
bolt_typeSINGLE BEVEL NONREVERSIBLE
face_shapeFLAT
action_typeSPRING
furnished_dataACTIVE INGREDIENT PRESENCE
overall_height1.438 INCHES NOMINAL IN
overall_length2.750 INCHES NOMINAL IN
sight_diameter0.875 INCHES NOMINAL IN
special_featuresCASE SHAPE:RECTANGULAR;CASE WIDTH:4.060 IN.;CASE THICKNESS:0.660 IN.THK;BACKSET DEPTH:2.542 IN.;CASE HEIGHT:2.620 IN. IN
style_designatorSINGLE PORT W/CAP
NSN5325-00-297-1054
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 541A · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
29-32-9Interchangeable
interchangeable cross-reference
interchangeable
WPP1536Interchangeable
interchangeable cross-reference
interchangeable
541-0D6AInterchangeable
interchangeable cross-reference
interchangeable
54-1AInterchangeable
interchangeable cross-reference
interchangeable
AR18-3Interchangeable
interchangeable cross-reference
interchangeable
S18-541AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 541A?
541A is a LIGHT,MARKER,CLEARANCE.
What parts can replace 541A?
There are 8 known substitutes for 541A: 29-32-9, WPP1536, 541-0D6A and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 541A?
541A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-297-1054. 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