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2179564 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2179564: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, head_style: DOUBLE HEXAGON W/HOLEDOUBLE HEXAGON W/HOLE, grip_length: 0.280 INCHES MINIMUM AND 0.280 INCHES MINIMUM AND 0.355 INCHES MAXIMUM0.355 INCHES MAXIMUM IN, head_height: 0.293 INCHES MINIMUM AND 0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM0.313 INCHES MAXIMUM IN, thread_class: 3A3A, thread_length: 0.385 INCHES MINIMUM AND 0.385 INCHES MINIMUM AND 0.480 INCHES MAXIMUM0.480 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-134-1962, 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
2179564
NSN: 5306-01-134-1962
FSC: 5306 — Bolts
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
head_styleDOUBLE HEXAGON W/HOLEDOUBLE HEXAGON W/HOLE
grip_length0.280 INCHES MINIMUM AND 0.280 INCHES MINIMUM AND 0.355 INCHES MAXIMUM0.355 INCHES MAXIMUM IN
head_height0.293 INCHES MINIMUM AND 0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM0.313 INCHES MAXIMUM IN
thread_class3A3A
thread_length0.385 INCHES MINIMUM AND 0.385 INCHES MINIMUM AND 0.480 INCHES MAXIMUM0.480 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES BEARING SURFACE OF HEAD32.0 MICROINCHES BEARING SURFACE OF HEAD
fastener_length0.740 INCHES MINIMUM AND 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM0.760 INCHES MAXIMUM IN
thread_directionRIGHT-HANDRIGHT-HAND
features_providedFINISHED HEADFINISHED HEAD
width_between_flats0.312 INCHES NOMINAL0.312 INCHES NOMINAL IN
nominal_thread_diameter0.250 INCHES0.250 INCHES IN
NSN5306-01-134-1962
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2179564 · 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
•
SURFACE FINISH: 32.0 MICROINCHES GRIP32.0 MICROINCHES GRIP
•
EXTENDED WASHER THICKNESS: 0.060 INCHES MINIMUM0.060 INCHES MINIMUM IN
•
HEAD HEIGHT: 0.293 INCHES MINIMUM AND 0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM0.313 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.740 INCHES MINIMUM AND 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM0.760 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.428 INCHES MINIMUM AND 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM0.448 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.385 INCHES MINIMUM AND 0.385 INCHES MINIMUM AND 0.480 INCHES MAXIMUM0.480 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALLAMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES GRIP32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD32.0 MICROINCHES BEARING SURFACE OF HEAD
EXTENDED WASHER THICKNESS0.060 INCHES MINIMUM0.060 INCHES MINIMUM IN
HEAD HEIGHT0.293 INCHES MINIMUM AND 0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM0.313 INCHES MAXIMUM IN
FASTENER LENGTH0.740 INCHES MINIMUM AND 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM0.760 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.428 INCHES MINIMUM AND 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM0.448 INCHES MAXIMUM IN
THREAD LENGTH0.385 INCHES MINIMUM AND 0.385 INCHES MINIMUM AND 0.480 INCHES MAXIMUM0.480 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALLAMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES0.250 INCHES IN
FEATURES PROVIDEDFINISHED HEADFINISHED HEAD
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

No substitute or cross-reference records for this part.

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 2179564?
2179564 is a BOLT,MACHINE.
What is the NSN for 2179564?
2179564 is cataloged in the U.S. Government catalog under NSN 5306-01-134-1962. 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.