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Technical Data Sheet
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1AX108 — Technical Data Sheet

✓ 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: 0.312 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 1.750 INCHES NOMINAL IN, fastener_length: 1.750 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System under NSN 5305-00-543-2273, 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
1AX108
NSN: 5305-00-543-2273
FSC: 5305
CAGE: 76040 — MACK TRUCKS INC PARTS OPN (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.312 INCHES NOMINAL IN
thread_class2A A
thread_length1.750 INCHES NOMINAL IN
fastener_length1.750 INCHES NOMINAL IN
hardness_rating23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR ZINC OVERALL
width_between_flats0.750 INCHES NOMINAL IN
end_item_identificationMRAP BUFFALO MK2A2
nominal_thread_diameter0.500 INCHES IN
NSN5305-00-543-2273
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1AX108 · 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
•
HEAD HEIGHT: 0.312 INCHES NOMINAL IN
•
WIDTH BETWEEN FLATS: 0.750 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
THREAD QUANTITY PER INCH: 20
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 10P STYLE AND 5 GRADE
•
THREAD SERIES DESIGNATOR: UNF
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.312 INCHES NOMINAL IN
WIDTH BETWEEN FLATS0.750 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
THREAD QUANTITY PER INCH20
END ITEM IDENTIFICATIONMRAP BUFFALO MK2A2
NOMINAL THREAD DIAMETER0.500 INCHES IN
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE AND 5 GRADE
THREAD SERIES DESIGNATORUNF
HARDNESS RATING23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
THREAD CLASS2A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
MS35389-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
509561InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
4.10-6InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
ZZ-I-550InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
199-104-7000InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
519115InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1AX108?
1AX108 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 1AX108?
There are 24 known substitutes for 1AX108: MS35389-1, 509561, 4.10-6 and 21 more. Substitute compatibility should be verified for your specific system.
Is 1AX108 still available?
1AX108 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: October 2026