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2493887 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2493887: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303SE OVERALL, head_style: FLAT CHAMFER, head_height: 0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.305 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN, thread_length: 0.161 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-042-6582, 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
2493887
NSN: 5305-00-042-6582
FSC: 5305 — Screws
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 303SE OVERALL
head_styleFLAT CHAMFER
head_height0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.305 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
thread_length0.161 INCHES MINIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.551 INCHES NOMINAL IN
shoulder_length0.376 INCHES MINIMUM AND 0.377 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.186 INCHES MINIMUM AND 0.187 INCHES MAXIMUM FIRST SHOULDER IN
internal_drive_styleSLOT
NSN5305-00-042-6582
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2493887 · 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: 0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.551 INCHES NOMINAL IN
•
SHOULDER LENGTH: 0.376 INCHES MINIMUM AND 0.377 INCHES MAXIMUM FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.186 INCHES MINIMUM AND 0.187 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.161 INCHES MINIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
FASTENER LENGTH0.551 INCHES NOMINAL IN
SHOULDER LENGTH0.376 INCHES MINIMUM AND 0.377 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER0.186 INCHES MINIMUM AND 0.187 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.161 INCHES MINIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.138 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
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: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2493887?
2493887 is a SCREW,SHOULDER.
What is the NSN for 2493887?
2493887 is cataloged in the U.S. Government catalog under NSN 5305-00-042-6582. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.