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1138571 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

1138571: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, head_height: 3.55 INCHES MINIMUM AND 4.38 INCHES MAXIMUM IN, thread_class: 6G G, fastener_length: 50.0 MILLIMETERS NOMINAL MM, thread_direction: RIGHT-HAND, width_between_flats: 9.64 INCHES MINIMUM AND 10.00 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-616-8043, 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
1138571
NSN: 5305-01-616-8043
FSC: 5305 — Screws
CAGE: 0Y3H3 — FASTENAL COMPANY DBA FASTENAL CO (USA)
SPECIFICATIONS
head_styleHEXAGON
head_height3.55 INCHES MINIMUM AND 4.38 INCHES MAXIMUM IN
thread_class6G G
fastener_length50.0 MILLIMETERS NOMINAL MM
thread_directionRIGHT-HAND
width_between_flats9.64 INCHES MINIMUM AND 10.00 INCHES MAXIMUM IN
end_item_identification3930-01-599-9978
nominal_thread_diameter6.0 MILLIMETERS MM
thread_series_designatorM
thread_pitch_in_millimeters1.0
NSN5305-01-616-8043
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1138571 · 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: 3.55 INCHES MINIMUM AND 4.38 INCHES MAXIMUM IN
•
FASTENER LENGTH: 50.0 MILLIMETERS NOMINAL MM
•
THREAD PITCH IN MILLIMETERS: 1.0
•
NOMINAL THREAD DIAMETER: 6.0 MILLIMETERS MM
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 9.64 INCHES MINIMUM AND 10.00 INCHES MAXIMUM IN
•
THREAD CLASS: 6G G
TECHNICAL CHARACTERISTICS
HEAD HEIGHT3.55 INCHES MINIMUM AND 4.38 INCHES MAXIMUM IN
FASTENER LENGTH50.0 MILLIMETERS NOMINAL MM
THREAD PITCH IN MILLIMETERS1.0
NOMINAL THREAD DIAMETER6.0 MILLIMETERS MM
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS9.64 INCHES MINIMUM AND 10.00 INCHES MAXIMUM IN
THREAD CLASS6G G
END ITEM IDENTIFICATION3930-01-599-9978
THREAD SERIES DESIGNATORM
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
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1138571?
1138571 is a SCREW,CAP,HEXAGON HEAD.
What is the NSN for 1138571?
1138571 is cataloged in the U.S. Government catalog under NSN 5305-01-616-8043. This indicates validated use in U.S. government and defense supply chains.
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