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Technical Data Sheet
PartsTable / COMPONENT / 540905
540905 ✓ 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 SETSCREW is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, head_style: HEADLESS (SETSCREW), point_style: FLAT, thread_class: 2A A, thread_length: 0.094 INCHES MAXIMUM IN, fastener_length: 0.094 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 5305-00-285-1408, 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
540905
NSN: 5305-00-285-1408
FSC: 5305
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
head_styleHEADLESS (SETSCREW)
point_styleFLAT
thread_class2A A
thread_length0.094 INCHES MAXIMUM IN
fastener_length0.094 INCHES NOMINAL IN
hardness_rating30.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.086 INCHES IN
thread_quantity_per_inch64
thread_series_designatorUNF
NSN5305-00-285-1408
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 540905 · 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
•
THREAD SERIES DESIGNATOR: UNF
•
NOMINAL THREAD DIAMETER: 0.086 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
MATERIAL: COPPER ALLOY OVERALL
•
HARDNESS RATING: 30.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
•
THREAD CLASS: 2A A
•
HEAD STYLE: HEADLESS (SETSCREW)
•
POINT STYLE: FLAT
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD DIAMETER0.086 INCHES IN
THREAD DIRECTIONRIGHT-HAND
MATERIALCOPPER ALLOY OVERALL
HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
THREAD CLASS2A A
HEAD STYLEHEADLESS (SETSCREW)
POINT STYLEFLAT
THREAD LENGTH0.094 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH64
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
FF-S-210Interchangeable
interchangeable cross-reference
interchangeable
FF-S-103 TYPE 2 STYLE 5Interchangeable
interchangeable cross-reference
interchangeable
179120Interchangeable
interchangeable cross-reference
interchangeable
FF-S-210BInterchangeable
interchangeable cross-reference
interchangeable
MS51955-77Interchangeable
interchangeable cross-reference
interchangeable
MS51955-18Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 540905?
540905 is a SETSCREW.
What parts can replace 540905?
There are 11 known substitutes for 540905: FF-S-210, FF-S-103 TYPE 2 STYLE 5, 179120 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 540905?
540905 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-285-1408. 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