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Technical Data Sheet
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ST2654-12 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ST2654-12: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, head_style: HEXAGON EXTENDED WASHER, head_height: 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.750 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN, fastener_length: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-321-0645, 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
ST2654-12
NSN: 5306-01-321-0645
FSC: 5306 — Bolts
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
head_styleHEXAGON EXTENDED WASHER
head_height0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
thread_class3A A
thread_length0.750 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN
fastener_length0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
width_between_flats0.435 INCHES NOMINAL IN
end_item_identificationF100PW0229 ENGINE
nominal_thread_diameter0.250 INCHES IN
extended_washer_diameter0.398 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
thread_quantity_per_inch28
NSN5306-01-321-0645
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST2654-12 · 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
•
EXTENDED WASHER THICKNESS: 0.006 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.398 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.750 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 7471 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: HEXAGON EXTENDED WASHER
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.006 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN
HEAD HEIGHT0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
FASTENER LENGTH0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.398 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
THREAD LENGTH0.750 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 7471 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEHEXAGON EXTENDED WASHER
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.435 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES 1
5306PL1693192Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST2654-12?
ST2654-12 is a BOLT,MACHINE.
What parts can replace ST2654-12?
There is 1 known substitute for ST2654-12: 5306PL1693192. Substitute compatibility should be verified for your specific system.
What is the NSN for ST2654-12?
ST2654-12 is cataloged in the U.S. Government catalog under NSN 5306-01-321-0645. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.