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Technical Data Sheet
PartsTable / COMPONENT / 11FM10BX1-2-20X1-2
11FM10BX1-2-20X1-2 ✓ 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,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.250 INCHES MINIMUM IN, fastener_length: 1.500 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 5305-00-018-1431, 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
11FM10BX1-2-20X1-2
NSN: 5305-00-018-1431
FSC: 5305
CAGE: 82796 — COLTEC INDUSTRIES INC. DBA FAIRBANKS MORSE ENGINE DIV FAIRBANKS MORSE ENGINE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
thread_class2A A
thread_length1.250 INCHES MINIMUM IN
fastener_length1.500 INCHES NOMINAL IN
hardness_rating23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
width_between_flats0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
nominal_thread_diameter0.500 INCHES IN
minimum_tensile_strength120000 POUNDS PER SQUARE INCH LBS
thread_quantity_per_inch20
NSN5305-00-018-1431
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 11FM10BX1-2-20X1-2 · 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: 20
•
HEAD STYLE: HEXAGON
•
HEAD HEIGHT: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
MATERIAL: STEEL OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 10P STYLE
•
THREAD SERIES DESIGNATOR: UNF
•
HARDNESS RATING: 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH20
HEAD STYLEHEXAGON
HEAD HEIGHT0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL OVERALL
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE
THREAD SERIES DESIGNATORUNF
HARDNESS RATING23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
THREAD CLASS2A A
FASTENER LENGTH1.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
126099Interchangeable
interchangeable cross-reference
interchangeable
407430257Interchangeable
interchangeable cross-reference
interchangeable
60-8-1Interchangeable
interchangeable cross-reference
interchangeable
181431Interchangeable
Same NIIN cross-reference
interchangeable
BCVX4LQInterchangeable
Same NIIN cross-reference
interchangeable
MS35296-113Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11FM10BX1-2-20X1-2?
11FM10BX1-2-20X1-2 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 11FM10BX1-2-20X1-2?
There are 6 known substitutes for 11FM10BX1-2-20X1-2: 126099, 407430257, 60-8-1 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 11FM10BX1-2-20X1-2?
11FM10BX1-2-20X1-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-018-1431. 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