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Technical Data Sheet
PartsTable / COMPONENT / M1T-26
M1T-26 ✓ 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 1020 OVERALL, head_style: THUMB NO. 4, head_height: 0.812 INCHES NOMINAL IN, thread_class: 2A A, fastener_length: 3.000 INCHES NOMINAL IN, thread_direction: RIGHT-HAND.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-410-3444, 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
M1T-26
NSN: 5305-00-410-3444
FSC: 5305
CAGE: 01599 — REID SUPPLY COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 1020 OVERALL
head_styleTHUMB NO. 4
head_height0.812 INCHES NOMINAL IN
thread_class2A A
fastener_length3.000 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_between_flats1.375 INCHES NOMINAL IN
nominal_thread_diameter0.375 INCHES IN
thread_quantity_per_inch16
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-00-410-3444
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: M1T-26 · 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 DIRECTION: RIGHT-HAND
•
FASTENER LENGTH: 3.000 INCHES NOMINAL IN
•
WIDTH BETWEEN FLATS: 1.375 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.812 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1020 OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
FASTENER LENGTH3.000 INCHES NOMINAL IN
WIDTH BETWEEN FLATS1.375 INCHES NOMINAL IN
HEAD HEIGHT0.812 INCHES NOMINAL IN
MATERIALSTEEL COMP 1020 OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD CLASS2A A
HEAD STYLETHUMB NO. 4
THREAD QUANTITY PER INCH16
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
E45Interchangeable
interchangeable cross-reference
interchangeable
T26Interchangeable
interchangeable cross-reference
interchangeable
LR45Interchangeable
interchangeable cross-reference
interchangeable
SCD1967Interchangeable
interchangeable cross-reference
interchangeable
MS21314-13Interchangeable
interchangeable cross-reference
interchangeable
PTT26Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M1T-26?
M1T-26 is a THUMBSCREW.
What parts can replace M1T-26?
There are 15 known substitutes for M1T-26: E45, T26, LR45 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M1T-26?
M1T-26 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-410-3444. 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