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Technical Data Sheet
PartsTable / COMPONENT / 540-8004-002
540-8004-002 ✓ 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 THUMBSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: KNURLED NO. 1, head_height: 0.406 INCHES NOMINAL IN, point_style: FLAT, thread_class: 2A A, head_diameter: 0.313 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 5305-00-582-6111, 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
540-8004-002
NSN: 5305-00-582-6111
FSC: 5305
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleKNURLED NO. 1
head_height0.406 INCHES NOMINAL IN
point_styleFLAT
thread_class2A A
head_diameter0.313 INCHES NOMINAL IN
thread_length0.287 INCHES MINIMUM IN
fastener_length0.438 INCHES NOMINAL IN
special_featuresUNTHREADED PORTION UNDERCUT 0.080 IN. MIN,0.083 IN. MAX DIA,0.066 IN. MIN,0.176 IN. MAX LG IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
nominal_thread_diameter0.112 INCHES IN
NSN5305-00-582-6111
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 540-8004-002 · 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 LENGTH: 0.287 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.112 INCHES IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL: STEEL COMP 303 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD QUANTITY PER INCH: 40
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESUNTHREADED PORTION UNDERCUT 0.080 IN. MIN,0.083 IN. MAX DIA,0.066 IN. MIN,0.176 IN. MAX LG IN
THREAD LENGTH0.287 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.112 INCHES IN
SURFACE TREATMENTPASSIVATE OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MATERIALSTEEL COMP 303 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD QUANTITY PER INCH40
HEAD DIAMETER0.313 INCHES NOMINAL IN
POINT STYLEFLAT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
118161Interchangeable
interchangeable cross-reference
interchangeable
AN500A8-6Interchangeable
interchangeable cross-reference
interchangeable
10125408Interchangeable
interchangeable cross-reference
interchangeable
61S25K6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 540-8004-002?
540-8004-002 is a THUMBSCREW.
What parts can replace 540-8004-002?
There are 4 known substitutes for 540-8004-002: 118161, AN500A8-6, 10125408 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 540-8004-002?
540-8004-002 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-582-6111. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026