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4819278-1 — INSERT,SCREW THREAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

4819278-1: INSERT,SCREW THREAD.

The INSERT,SCREW THREAD is a the manufacturer industrial component. Key specifications include length: 0.500 INCHES NOMINAL IN, insert_size: 0.374 IN MIN 0.376 IN MAX IN, flange_thickness: 0.125 INCHES NOMINAL IN, style_designator: FLANGE, surface_treatment: PASSIVATE OVERALL, width_across_flats: 0.625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-068-6903, 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
4819278-1
NSN: 5325-00-068-6903
FSC: 5325 — Fastening Devices
CAGE: 88277 — THE BOEING COMPANY (USA)
SPECIFICATIONS
length0.500 INCHES NOMINAL IN
insert_size0.374 IN MIN 0.376 IN MAX IN
flange_thickness0.125 INCHES NOMINAL IN
style_designatorFLANGE
surface_treatmentPASSIVATE OVERALL
width_across_flats0.625 INCHES NOMINAL IN
NSN5325-00-068-6903
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4819278-1 · 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
•
WIDTH ACROSS FLATS: 0.625 INCHES NOMINAL IN
•
LENGTH: 0.500 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.125 INCHES NOMINAL IN
•
INSERT SIZE: 0.374 IN MIN 0.376 IN MAX IN
•
STYLE DESIGNATOR: FLANGE
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.625 INCHES NOMINAL IN
LENGTH0.500 INCHES NOMINAL IN
FLANGE THICKNESS0.125 INCHES NOMINAL IN
INSERT SIZE0.374 IN MIN 0.376 IN MAX IN
STYLE DESIGNATORFLANGE
SPECIAL FEATURESGROOVE ON OD 0.063 IN FROM END OPPOSITE FLANGE 0.029 IN P .003 M .000 W BY 0.352 IN PORM 0.002 DIA UNDERCUT,THD END OPPOSITE FLANGE COUNTERSUNK 90 DEG BY 0.344 IN DIA,HEX FLANGE WITH 2 HOLES 0.046 IN MIN 0.056 IN MAX DIA DRILLED PARALLEL TO 2 HEX FLATS W
SURFACE TREATMENTPASSIVATE OVERALL
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES 1
48192781-1Same 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 4819278-1?
4819278-1 is a INSERT,SCREW THREAD.
What parts can replace 4819278-1?
There is 1 known substitute for 4819278-1: 48192781-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 4819278-1?
4819278-1 is cataloged in the U.S. Government catalog under NSN 5325-00-068-6903. 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.