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PartsTable / COMPONENT / LL57M40S7
LL57M40S7 ✓ 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 SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OVERALL, head_style: BINDING, head_height: 0.056 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.223 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN, thread_length: 0.355 INCHES MINIMUM AND 0.437 INCHES MAXIMUM 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 5305-01-045-9550, 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
LL57M40S7
NSN: 5305-01-045-9550
FSC: 5305
CAGE: 03038 — LONG-LOK, LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OVERALL
head_styleBINDING
head_height0.056 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.223 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
thread_length0.355 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
fastener_length0.405 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
locking_featureSTRIP THREADS
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
internal_drive_styleSLOT
nominal_thread_diameter0.112 INCHES IN
NSN5305-01-045-9550
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: LL57M40S7 · 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 QUANTITY PER INCH: 40
•
THREAD LENGTH: 0.355 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
•
HEAD DIAMETER: 0.223 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.056 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
HEAD STYLE: BINDING
•
THREAD CLASS: 2A A
•
FASTENER LENGTH: 0.405 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH40
THREAD LENGTH0.355 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
HEAD DIAMETER0.223 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
HEAD HEIGHT0.056 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
HEAD STYLEBINDING
THREAD CLASS2A A
FASTENER LENGTH0.405 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.112 INCHES IN
MATERIALSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
956-4704Interchangeable
interchangeable cross-reference
interchangeable
AI-6Interchangeable
interchangeable cross-reference
interchangeable
LS-103RInterchangeable
interchangeable cross-reference
interchangeable
31-111Interchangeable
interchangeable cross-reference
interchangeable
31-105Interchangeable
interchangeable cross-reference
interchangeable
31-122Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is LL57M40S7?
LL57M40S7 is a SCREW,CAP,SOCKET HEAD.
What parts can replace LL57M40S7?
There are 24 known substitutes for LL57M40S7: 956-4704, AI-6, LS-103R and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for LL57M40S7?
LL57M40S7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-045-9550. 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