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6J1551 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

6J1551: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, head_height: 0.658 INCHES MINIMUM AND 0.718 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 2.250 INCHES NOMINAL IN, fastener_length: 5.250 INCHES NOMINAL IN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-121-1667, 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
6J1551
NSN: 5305-01-121-1667
FSC: 5305 — Screws
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
head_styleHEXAGON
head_height0.658 INCHES MINIMUM AND 0.718 INCHES MAXIMUM IN
thread_class2A A
thread_length2.250 INCHES NOMINAL IN
fastener_length5.250 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_between_flats1.631 INCHES MINIMUM AND 1.688 INCHES MAXIMUM IN
nominal_thread_diameter1.125 INCHES IN
thread_quantity_per_inch7
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-121-1667
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 6J1551 · 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
•
HEAD HEIGHT: 0.658 INCHES MINIMUM AND 0.718 INCHES MAXIMUM IN
•
FASTENER LENGTH: 5.250 INCHES NOMINAL IN
•
THREAD LENGTH: 2.250 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 1.125 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 1.631 INCHES MINIMUM AND 1.688 INCHES MAXIMUM IN
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.658 INCHES MINIMUM AND 0.718 INCHES MAXIMUM IN
FASTENER LENGTH5.250 INCHES NOMINAL IN
THREAD LENGTH2.250 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER1.125 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS1.631 INCHES MINIMUM AND 1.688 INCHES MAXIMUM IN
THREAD CLASS2A A
THREAD QUANTITY PER INCH7
MATERIALSTEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1527 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1033 OR STEEL COMP 1034 OR STEEL COMP 1035 OR STEEL COMP 1536 OR STEEL COMP 1037 OR STEEL COMP 1038 OR STEEL COMP 1039 OR STEEL COMP 1040 OR STEEL COMP 1541 OVERALL
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6J1551?
6J1551 is a SCREW,CAP,HEXAGON HEAD.
What is the NSN for 6J1551?
6J1551 is cataloged in the U.S. Government catalog under NSN 5305-01-121-1667. This indicates validated use in U.S. government and defense supply chains.
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