PartsTable
Technical Data Sheet
Download PDF

300103ITEM4 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

300103ITEM4: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY K-500 OVERALL, head_style: FLAT CHAMFER, head_height: 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN, thread_length: 1.120 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-128-9578, 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
300103ITEM4
NSN: 5305-01-128-9578
NIINs: 011289578, 011332181
FSC: 5305 — Screws
CAGE: 18444 — OIL STATES INDUSTRIES, INC. DIV SPECIAL PRODUCTS DIV (USA)
SPECIFICATIONS
materialNICKEL ALLOY K-500 OVERALL
head_styleFLAT CHAMFER
head_height0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
thread_length1.120 INCHES MINIMUM IN
fastener_length1.210 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
locking_featureSTRIP OR PELLET OR PATCH THREADS
thread_directionRIGHT-HAND
width_across_flats0.250 INCHES NOMINAL IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.312 INCHES IN
NSN5305-01-128-9578
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 300103ITEM4 · 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
SUBSTITUTES & CROSS-REFERENCES 8
300103ITEM4L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ME-400-233Reference document
Same NSN cross-reference
Reference document — Secondary reference
FF-S-86L1Reference document
Same NSN cross-reference
Reference document — Secondary reference
299934 ITEM 4Reference document
Same NSN cross-reference
Reference document — Secondary reference
300088 ITEM 4Reference document
Same NSN cross-reference
Reference document — Secondary reference
300088 ITEM 4L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 300103ITEM4?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 300103ITEM4?
300103ITEM4 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 300103ITEM4?
There are 8 known substitutes for 300103ITEM4: 300103ITEM4L1, ME-400-233, FF-S-86L1 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 300103ITEM4?
300103ITEM4 is cataloged in the U.S. Government catalog under NSN 5305-01-128-9578. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 300103ITEM4

✓ 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.