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11911-4-8-1 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

11911-4-8-1: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: FILLISTER COUNTERSUNK, head_height: 0.015 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN, thread_length: 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-072-4704, 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
11911-4-8-1
NSN: 5305-01-072-4704
FSC: 5305 — Screws
CAGE: 59563 — REID PRODUCTS INC. DBA REID PRODUCTS INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleFILLISTER COUNTERSUNK
head_height0.015 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
thread_length0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.881 INCHES MINIMUM AND 0.928 INCHES MAXIMUM IN
shoulder_length0.447 INCHES NOMINAL FIRST SHOULDER IN
special_featuresSOCKET DRIVE RECESS IN THREAD END,0.095 IN. NOM. WIDTH ACROSS FLATS IN
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
NSN5305-01-072-4704
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 11911-4-8-1 · 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: 0.015 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.881 INCHES MINIMUM AND 0.928 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.447 INCHES NOMINAL FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.264 INCHES MINIMUM AND 0.265 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
MATERIAL DOCUMENT AND CLASSIFICATION: 23-112,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.015 INCHES MAXIMUM IN
FASTENER LENGTH0.881 INCHES MINIMUM AND 0.928 INCHES MAXIMUM IN
SHOULDER LENGTH0.447 INCHES NOMINAL FIRST SHOULDER IN
SHOULDER DIAMETER0.264 INCHES MINIMUM AND 0.265 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATION23-112,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFILLISTER COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 3
HT4016-4-8XReference document
Same NSN cross-reference
Reference document — Secondary reference
10198362Reference document
Same NSN cross-reference
Reference document — Informative reference only
ST3M495-4-8-1Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
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 11911-4-8-1?
11911-4-8-1 is a SCREW,SHOULDER.
What parts can replace 11911-4-8-1?
There are 3 known substitutes for 11911-4-8-1: HT4016-4-8X, 10198362, ST3M495-4-8-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 11911-4-8-1?
11911-4-8-1 is cataloged in the U.S. Government catalog under NSN 5305-01-072-4704. 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.