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Technical Data Sheet
PartsTable / COMPONENT / 540325-403
540325-403 ✓ 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: STEEL COMP 303SE OVERALL, head_style: HEADLESS (SETSCREW), point_style: CUP, thread_class: 3A A, thread_length: 0.125 INCHES MAXIMUM IN, fastener_length: 0.125 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-579-0093, 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
540325-403
NSN: 5305-00-579-0093
FSC: 5305
CAGE: 12436 — BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. DIV BAE SYSTEMS INFORMATION & ELECTRONIC SYSTEMS INTEGRATION INC (USA)
SPECIFICATIONS
materialSTEEL COMP 303SE OVERALL
head_styleHEADLESS (SETSCREW)
point_styleCUP
thread_class3A A
thread_length0.125 INCHES MAXIMUM IN
fastener_length0.125 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.164 INCHES IN
thread_quantity_per_inch32
NSN5305-00-579-0093
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 540325-403 · 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
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
HEAD STYLE: HEADLESS (SETSCREW)
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-7720 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18732 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
NONDEFINITIVE SPEC/STD DATA: 3 TYPE AND 4 STYLE
•
MATERIAL: STEEL COMP 303SE OVERALL
•
THREAD CLASS: 3A A
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.164 INCHES IN
HEAD STYLEHEADLESS (SETSCREW)
SURFACE TREATMENTPASSIVATE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7720 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18732 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
NONDEFINITIVE SPEC/STD DATA3 TYPE AND 4 STYLE
MATERIALSTEEL COMP 303SE OVERALL
THREAD CLASS3A A
POINT STYLECUP
INTERNAL DRIVE STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
328874Interchangeable
interchangeable cross-reference
interchangeable
LD91119Interchangeable
interchangeable cross-reference
interchangeable
7007361-1Interchangeable
interchangeable cross-reference
interchangeable
7007361Interchangeable
interchangeable cross-reference
interchangeable
AN565DC832H2Interchangeable
interchangeable cross-reference
interchangeable
NASM565Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 540325-403?
540325-403 is a SETSCREW.
What parts can replace 540325-403?
There are 12 known substitutes for 540325-403: 328874, LD91119, 7007361-1 and 9 more. Substitute compatibility should be verified for your specific system.
Is 540325-403 still available?
540325-403 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026