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MS51975-19X — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MS51975-19X: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, thread_class: 3A A, chamfer_angle: 30.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM, head_diameter: 0.543 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-714-4892, 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
MS51975-19X
NSN: 5305-01-714-4892
FSC: 5305 — Screws
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
head_height0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
thread_class3A A
chamfer_angle30.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM
head_diameter0.543 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
thread_length0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
shoulder_shapeROUND OVERALL
fastener_length1.480 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
shoulder_length0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM OVERALL IN
special_featuresTENSILE STRENGTH LBF IS 6,170; DOUBLE SHEAR STRENGTH LBF IS 18,150
thread_directionRIGHT-HAND
NSN5305-01-714-4892
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS51975-19X · 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: 0.188 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.480 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM OVERALL IN
•
SHOULDER DIAMETER: 0.3710 INCHES MINIMUM AND 0.3730 INCHES MAXIMUM OVERALL IN
•
THREAD LENGTH: 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: NAS-21472 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.188 INCHES NOMINAL IN
HEAD HEIGHT0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
FASTENER LENGTH1.480 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
SHOULDER LENGTH0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM OVERALL IN
SHOULDER DIAMETER0.3710 INCHES MINIMUM AND 0.3730 INCHES MAXIMUM OVERALL IN
THREAD LENGTH0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
SHOULDER SHAPEROUND OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONNAS-21472 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.3125 INCHES IN
HEAD STYLEFLAT CHAMFER
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
512-8839672-21-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
211049872Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LSA005045-21-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS51975-19X?
MS51975-19X is a SCREW,SHOULDER.
What parts can replace MS51975-19X?
There are 3 known substitutes for MS51975-19X: 512-8839672-21-4, 211049872, LSA005045-21-4. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51975-19X?
MS51975-19X is cataloged in the U.S. Government catalog under NSN 5305-01-714-4892. 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.