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10278547 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

10278547: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OR STEEL COMP 303SE OVERALL, head_style: FLAT CHAMFER, head_height: 0.146 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.250 INCHES NOMINAL IN, thread_length: 0.120 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-028-2764, 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
10278547
NSN: 5305-01-028-2764
FSC: 5305 — Screws
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OR STEEL COMP 303SE OVERALL
head_styleFLAT CHAMFER
head_height0.146 INCHES NOMINAL IN
thread_class2A A
head_diameter0.250 INCHES NOMINAL IN
thread_length0.120 INCHES NOMINAL IN
fastener_length0.306 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentCHROMIUM OVERALL
internal_drive_styleSLOT
nominal_thread_diameter0.112 INCHES IN
thread_quantity_per_inch40
NSN5305-01-028-2764
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 10278547 · 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: 0.146 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.306 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-14538 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.120 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.112 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.146 INCHES NOMINAL IN
FASTENER LENGTH0.306 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-14538 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.120 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.112 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTCHROMIUM OVERALL
INTERNAL DRIVE STYLESLOT
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 10278547?
10278547 is a SCREW,SHOULDER.
What is the NSN for 10278547?
10278547 is cataloged in the U.S. Government catalog under NSN 5305-01-028-2764. 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.