PartsTable
Technical Data Sheet
11X121 ✓ 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: 0.188 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.750 INCHES MINIMUM IN, surface_finish: 63.0 MICROINCHES THREADS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-021-5912, 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
11X121
NSN: 5305-00-021-5912
FSC: 5305
CAGE: 58275 — SASCO INC CANADIAN DIV
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.188 INCHES NOMINAL IN
thread_class2A A
thread_length0.750 INCHES MINIMUM IN
surface_finish63.0 MICROINCHES THREADS
fastener_length0.750 INCHES NOMINAL IN
hardness_rating23.0 ROCKWELL B MINIMUM AND 80.0 ROCKWELL B MAXIMUM OVERALL
thread_directionRIGHT-HAND
width_between_flats0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
nominal_thread_diameter0.250 INCHES IN
minimum_tensile_strength74000 POUNDS PER SQUARE INCH LBS
NSN5305-00-021-5912
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 11X121 · 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: 0.750 INCHES MINIMUM IN
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 1 STYLE AND 2 GRADE
MATERIAL: STEEL OVERALL
THREAD SERIES DESIGNATOR: UNF
SURFACE FINISH: 63.0 MICROINCHES THREADS
HARDNESS RATING: 23.0 ROCKWELL B MINIMUM AND 80.0 ROCKWELL B MAXIMUM OVERALL
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY HEAD HEIGHT
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH0.750 INCHES MINIMUM IN
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 1 STYLE AND 2 GRADE
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNF
SURFACE FINISH63.0 MICROINCHES THREADS
HARDNESS RATING23.0 ROCKWELL B MINIMUM AND 80.0 ROCKWELL B MAXIMUM OVERALL
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY HEAD HEIGHT
SURFACE FINISH125.0 MICROINCHES BEARING SURFACE OF HEAD
MATERIAL DOCUMENT AND CLASSIFICATIONSAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MINIMUM TENSILE STRENGTH74000 POUNDS PER SQUARE INCH LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
92134Interchangeable
interchangeable cross-reference
interchangeable
3825 PART 15Interchangeable
interchangeable cross-reference
interchangeable
RA3-8Interchangeable
interchangeable cross-reference
interchangeable
3998Interchangeable
interchangeable cross-reference
interchangeable
912789Interchangeable
interchangeable cross-reference
interchangeable
589498-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11X121?
11X121 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 11X121?
There are 25 known substitutes for 11X121: 92134, 3825 PART 15, RA3-8 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 11X121?
11X121 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-021-5912. This indicates validated use in U.S. government and defense supply chains.
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