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STD-280-1 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

STD-280-1: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, head_height: 0.750 INCHES NOMINAL IN, thread_class: 2A A, shoulder_shape: ROUND BEARING SURFACE OF HEAD, special_features: STAINLESS STL 17-4, PASSIVATE PER QQP35, width_between_flats: 0.375 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-552-1811, 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
STD-280-1
NSN: 5305-01-552-1811
FSC: 5305 — Screws
CAGE: 05259 — CONTAINER RESEARCH CORP DBA CONTAINER RESEARCH CORP DIV CONTAINR RESEARCH CORPORATION (USA)
SPECIFICATIONS
head_styleHEXAGON
head_height0.750 INCHES NOMINAL IN
thread_class2A A
shoulder_shapeROUND BEARING SURFACE OF HEAD
special_featuresSTAINLESS STL 17-4, PASSIVATE PER QQP35
width_between_flats0.375 INCHES NOMINAL IN
end_item_identificationTURBO PROP ENGINES
nominal_thread_diameter10.000 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNF
NSN5305-01-552-1811
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: STD-280-1 · 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: 0.750 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND BEARING SURFACE OF HEAD
•
NOMINAL THREAD DIAMETER: 10.000 INCHES IN
•
HEAD STYLE: HEXAGON
•
WIDTH BETWEEN FLATS: 0.375 INCHES NOMINAL IN
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.750 INCHES NOMINAL IN
SHOULDER SHAPEROUND BEARING SURFACE OF HEAD
NOMINAL THREAD DIAMETER10.000 INCHES IN
HEAD STYLEHEXAGON
WIDTH BETWEEN FLATS0.375 INCHES NOMINAL IN
SPECIAL FEATURESSTAINLESS STL 17-4, PASSIVATE PER QQP35
THREAD CLASS2A A
END ITEM IDENTIFICATIONTURBO PROP ENGINES
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNF
SUBSTITUTES & CROSS-REFERENCES 1
STD-280Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is STD-280-1?
STD-280-1 is a SCREW,SHOULDER.
What parts can replace STD-280-1?
There is 1 known substitute for STD-280-1: STD-280. Substitute compatibility should be verified for your specific system.
What is the NSN for STD-280-1?
STD-280-1 is cataloged in the U.S. Government catalog under NSN 5305-01-552-1811. 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.