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DAA7278L001 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

DAA7278L001: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include head_height: 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.750 INCHES NOMINAL IN, width_between_flats: 0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN, nominal_thread_diameter: 0.240 INCHES IN, thread_quantity_per_inch: 28. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-475-2645, 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
DAA7278L001
NSN: 5305-01-475-2645
FSC: 5305 — Screws
CAGE: 1W025 — NORTHROP GRUMMAN SYSTEMS CORP DBA NORTHROP GRUMMAN COMPUTING SYSTEMS (USA)
SPECIFICATIONS
head_height0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN
thread_class2A A
thread_length1.750 INCHES NOMINAL IN
width_between_flats0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
nominal_thread_diameter0.240 INCHES IN
thread_quantity_per_inch28
thread_series_designatorUNF
NSN5305-01-475-2645
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: DAA7278L001 · 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: 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.750 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.240 INCHES IN
•
WIDTH BETWEEN FLATS: 0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
•
THREAD CLASS: 2A A
•
THREAD QUANTITY PER INCH: 28
•
THREAD SERIES DESIGNATOR: UNF
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN
THREAD LENGTH1.750 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.240 INCHES IN
WIDTH BETWEEN FLATS0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
THREAD CLASS2A A
THREAD QUANTITY PER INCH28
THREAD SERIES DESIGNATORUNF
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

No substitute or cross-reference records for this part.

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 DAA7278L001?
DAA7278L001 is a SCREW,CAP,SOCKET HEAD.
What is the NSN for DAA7278L001?
DAA7278L001 is cataloged in the U.S. Government catalog under NSN 5305-01-475-2645. 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.