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5125198 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

5125198: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHER, head_height: 0.440 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 2.500 INCHES MINIMUM AND 2.700 INCHES MAXIMUM IN, fastener_length: 6.600 INCHES MINIMUM AND 6.750 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-056-3544, 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
5125198
NSN: 5306-00-056-3544
FSC: 5306 — Bolts
CAGE: 72582 — ROLLS-ROYCE SOLUTIONS AMERICA INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHER
head_height0.440 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
thread_class3A A
thread_length2.500 INCHES MINIMUM AND 2.700 INCHES MAXIMUM IN
fastener_length6.600 INCHES MINIMUM AND 6.750 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats0.725 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
nominal_thread_diameter0.625 INCHES IN
extended_washer_diameter1.000 INCHES NOMINAL IN
thread_quantity_per_inch11
NSN5306-00-056-3544
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5125198 · 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: 0.110 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.440 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
•
FASTENER LENGTH: 6.600 INCHES MINIMUM AND 6.750 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 1.000 INCHES NOMINAL IN
•
THREAD LENGTH: 2.500 INCHES MINIMUM AND 2.700 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.625 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
•
HEAD STYLE: DOUBLE HEXAGON EXTENDED WASHER
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.110 INCHES NOMINAL IN
HEAD HEIGHT0.440 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
FASTENER LENGTH6.600 INCHES MINIMUM AND 6.750 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER1.000 INCHES NOMINAL IN
THREAD LENGTH2.500 INCHES MINIMUM AND 2.700 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.625 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEDOUBLE HEXAGON EXTENDED WASHER
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.725 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 3
PC5125198Reference document
Same NSN cross-reference
Reference document — Secondary reference
5102374Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5306000563544Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5125198?
5125198 is a BOLT,MACHINE.
What parts can replace 5125198?
There are 3 known substitutes for 5125198: PC5125198, 5102374, 5306000563544. Substitute compatibility should be verified for your specific system.
What is the NSN for 5125198?
5125198 is cataloged in the U.S. Government catalog under NSN 5306-00-056-3544. 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.