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CA2730-4-8 — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

CA2730-4-8: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include head_style: FLAT CHAMFER, grip_length: 0.500 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN, head_height: 0.253 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM IN, head_diameter: 0.3742 INCHES MINIMUM AND 0.3747 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-061-9129, 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
CA2730-4-8
NSN: 5305-00-061-9129
FSC: 5305 — Screws
CAGE: 29372 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV TRIDAIR PRODUCTS (USA)
SPECIFICATIONS
head_styleFLAT CHAMFER
grip_length0.500 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
head_height0.253 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM IN
head_diameter0.3742 INCHES MINIMUM AND 0.3747 INCHES MAXIMUM IN
thread_length0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
fastener_length0.958 INCHES NOMINAL IN
special_featuresRETAINING ELEMENT IN SHANK
width_across_flats0.1875 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
shank_unthreaded_hole_diameter0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN
distance_from_head_largest_bearing_surface_to_shank_hole_center0.849 INCHES NOMINAL FIRST HOLE IN
NSN5305-00-061-9129
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: CA2730-4-8 · 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
•
WIDTH ACROSS FLATS: 0.1875 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.253 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.958 INCHES NOMINAL IN
•
THREAD LENGTH: 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN
•
HEAD STYLE: FLAT CHAMFER
•
GRIP LENGTH: 0.500 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
•
GRIP DIAMETER: 0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.1875 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
HEAD HEIGHT0.253 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN
FASTENER LENGTH0.958 INCHES NOMINAL IN
THREAD LENGTH0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
SHANK UNTHREADED HOLE DIAMETER0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN
HEAD STYLEFLAT CHAMFER
GRIP LENGTH0.500 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
GRIP DIAMETER0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM IN
SPECIAL FEATURESRETAINING ELEMENT IN SHANK
THREAD CLASS3A A
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 2
CC00035-48Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5305PL0643788Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 CA2730-4-8?
CA2730-4-8 is a SCREW,CLOSE TOLERANCE.
What parts can replace CA2730-4-8?
There are 2 known substitutes for CA2730-4-8: CC00035-48, 5305PL0643788. Substitute compatibility should be verified for your specific system.
What is the NSN for CA2730-4-8?
CA2730-4-8 is cataloged in the U.S. Government catalog under NSN 5305-00-061-9129. 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.