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Technical Data Sheet
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492921 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

492921: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, hole_type: DRILLED, head_style: DOUBLE HEXAGON EXTENDED WASHER, head_height: 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN, thread_class: 3A A, hole_diameter: 0.062 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-057-3591, 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
492921
NSN: 5306-00-057-3591
FSC: 5306 — Bolts
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
hole_typeDRILLED
head_styleDOUBLE HEXAGON EXTENDED WASHER
head_height0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
thread_class3A A
hole_diameter0.062 INCHES NOMINAL IN
hole_quantity4
thread_length0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
fastener_length0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
NSN5306-00-057-3591
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 492921 · 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: 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.060 INCHES MINIMUM AND 0.090 INCHES MAXIMUM FIRST HOLE IN
•
HOLE CONFIGURATION STYLE: DOUBLE HEXAGON FLATS
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
HEAD HEIGHT0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
FASTENER LENGTH0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
THREAD LENGTH0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
SHANK UNTHREADED HOLE DIAMETER0.060 INCHES MINIMUM AND 0.090 INCHES MAXIMUM FIRST HOLE IN
HOLE CONFIGURATION STYLEDOUBLE HEXAGON FLATS
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
FEATURES PROVIDEDFINISHED 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 492921?
492921 is a BOLT,MACHINE.
What is the NSN for 492921?
492921 is cataloged in the U.S. Government catalog under NSN 5306-00-057-3591. This indicates validated use in U.S. government and defense supply chains.
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