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6781961-1 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

6781961-1: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY OVERALL, head_style: HEXAGON EXTENDED WASHER, head_height: 0.370 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 1.875 INCHES NOMINAL IN, fastener_length: 3.335 INCHES MINIMUM AND 3.395 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-531-1786, 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
6781961-1
NSN: 5306-01-531-1786
FSC: 5306 — Bolts
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialTITANIUM ALLOY OVERALL
head_styleHEXAGON EXTENDED WASHER
head_height0.370 INCHES NOMINAL IN
thread_class2A A
thread_length1.875 INCHES NOMINAL IN
fastener_length3.335 INCHES MINIMUM AND 3.395 INCHES MAXIMUM IN
special_featuresBOLT, LOCK
thread_directionRIGHT-HAND
width_between_flats0.617 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
end_item_identificationUSED ON MK53-DLS, NEXT ASSY 6781950-1
nominal_thread_diameter0.375 INCHES IN
extended_washer_diameter0.812 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN
NSN5306-01-531-1786
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 6781961-1 · 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: 0.120 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.370 INCHES NOMINAL IN
•
FASTENER LENGTH: 3.335 INCHES MINIMUM AND 3.395 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.812 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.875 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: HEXAGON EXTENDED WASHER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.120 INCHES NOMINAL IN
HEAD HEIGHT0.370 INCHES NOMINAL IN
FASTENER LENGTH3.335 INCHES MINIMUM AND 3.395 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.812 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN
THREAD LENGTH1.875 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEHEXAGON EXTENDED WASHER
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.617 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
SPECIAL FEATURESBOLT, LOCK
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6781961-1?
6781961-1 is a BOLT,MACHINE.
What is the NSN for 6781961-1?
6781961-1 is cataloged in the U.S. Government catalog under NSN 5306-01-531-1786. This indicates validated use in U.S. government and defense supply chains.
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