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11911-4-4-1 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

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

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-13 OVERALL, head_style: OVAL COUNTERSUNK, thread_class: 3A A, head_diameter: 0.3898 INCHES MINIMUM AND 0.3948 INCHES MAXIMUM IN, thread_length: 0.372 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-084-4698, 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
11911-4-4-1
NSN: 5305-01-084-4698
FSC: 5305 — Screws
CAGE: 59563 — REID PRODUCTS INC. DBA REID PRODUCTS INC (USA)
SPECIFICATIONS
materialSTEEL COMP XM-13 OVERALL
head_styleOVAL COUNTERSUNK
thread_class3A A
head_diameter0.3898 INCHES MINIMUM AND 0.3948 INCHES MAXIMUM IN
thread_length0.372 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.632 INCHES MINIMUM AND 0.662 INCHES MAXIMUM IN
shoulder_length0.186 INCHES MINIMUM AND 0.206 INCHES MAXIMUM FIRST SHOULDER IN
special_featuresINTERNAL HEXAGON SOCKET IN THREADED END 0.0947 IN. MIN AND 0.0967 IN. MAX WIDTH ACROSS FLATS IN
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
shoulder_diameter0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM FIRST SHOULDER IN
NSN5305-01-084-4698
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 11911-4-4-1 · 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
•
FASTENER LENGTH: 0.632 INCHES MINIMUM AND 0.662 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.186 INCHES MINIMUM AND 0.206 INCHES MAXIMUM FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.372 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.632 INCHES MINIMUM AND 0.662 INCHES MAXIMUM IN
SHOULDER LENGTH0.186 INCHES MINIMUM AND 0.206 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.372 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEOVAL COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 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 3
HT4016-4-4XReference document
Same NSN cross-reference
Reference document — Secondary reference
10198360Reference document
Same NSN cross-reference
Reference document — Informative reference only
ST3M495-4-4-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 11911-4-4-1?
11911-4-4-1 is a SCREW,SHOULDER.
What parts can replace 11911-4-4-1?
There are 3 known substitutes for 11911-4-4-1: HT4016-4-4X, 10198360, ST3M495-4-4-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 11911-4-4-1?
11911-4-4-1 is cataloged in the U.S. Government catalog under NSN 5305-01-084-4698. 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.