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18257-044 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

18257-044: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, fastener_length: 1.130 INCHES NOMINAL IN, end_item_identification: SUPPORT BOX RETROFIT KIT, nominal_thread_diameter: 0.313 INCHES IN, thread_quantity_per_inch: 18, thread_series_designator: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5305-01-594-8554, 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
18257-044
NSN: 5305-01-594-8554
FSC: 5305 — Screws
CAGE: 21439 — CURTISS-WRIGHT FLOW CONTROL SERVICE, LLC DBA ENGINEERED ARRESTING SYSTEMS - ESCO DIV CW FLOW CONTROL SVC LLC DBA (USA)
SPECIFICATIONS
head_styleHEXAGON
fastener_length1.130 INCHES NOMINAL IN
end_item_identificationSUPPORT BOX RETROFIT KIT
nominal_thread_diameter0.313 INCHES IN
thread_quantity_per_inch18
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
part_name_assigned_by_controlling_agencySCREW, HEX HD CAP, 0.313-18-UNC X 1.13 LONG (AP)
NSN5305-01-594-8554
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 18257-044 · 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
•
FASTENER LENGTH: 1.130 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.313 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD QUANTITY PER INCH: 18
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS
FASTENER LENGTH1.130 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.313 INCHES IN
HEAD STYLEHEXAGON
PART NAME ASSIGNED BY CONTROLLING AGENCYSCREW, HEX HD CAP, 0.313-18-UNC X 1.13 LONG (AP)
END ITEM IDENTIFICATIONSUPPORT BOX RETROFIT KIT
THREAD QUANTITY PER INCH18
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
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 18257-044?
18257-044 is a SCREW,CAP,HEXAGON HEAD.
What is the NSN for 18257-044?
18257-044 is cataloged in the U.S. Government catalog under NSN 5305-01-594-8554. This indicates validated use in U.S. government and defense supply chains.
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