PartsTable
Technical Data Sheet
Download PDF

1780378-20 — Technical Data Sheet

✓ Government record, cited
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The EYELET,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, eyelet_width: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN, eyelet_height: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN, eyelet_overall_length: 0.980 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN, turnlock_eyelet_style: EYELET, center_to_center_distance: 0.747 INCHES MINIMUM AND 0.753 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-004-1067, 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
1780378-20
NSN: 5325-00-004-1067
FSC: 5325 — Fastening Devices
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
eyelet_width0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
eyelet_height0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
eyelet_overall_length0.980 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN
turnlock_eyelet_styleEYELET
center_to_center_distance0.747 INCHES MINIMUM AND 0.753 INCHES MAXIMUM IN
eyelet_mounting_hole_diameter0.096 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
NSN5325-00-004-1067
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1780378-20 · 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
•
EYELET HEIGHT: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
•
EYELET OVERALL LENGTH: 0.980 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN
•
EYELET WIDTH: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
•
TURNLOCK EYELET STYLE: EYELET
•
MATERIAL: COPPER ALLOY OVERALL
•
CENTER TO CENTER DISTANCE: 0.747 INCHES MINIMUM AND 0.753 INCHES MAXIMUM IN
•
EYELET MOUNTING HOLE DIAMETER: 0.096 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
EYELET HEIGHT0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
EYELET OVERALL LENGTH0.980 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN
EYELET WIDTH0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
TURNLOCK EYELET STYLEEYELET
MATERIALCOPPER ALLOY OVERALL
CENTER TO CENTER DISTANCE0.747 INCHES MINIMUM AND 0.753 INCHES MAXIMUM IN
EYELET MOUNTING HOLE DIAMETER0.096 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-001-4967 5325-00-008-2920 5325-00-013-2876 5325-00-071-8949 5325-00-141-7216
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
Ready to buy 1780378-20?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 1780378-20?
1780378-20 is a EYELET,TURNLOCK FASTENER.
What is the NSN for 1780378-20?
1780378-20 is cataloged in the U.S. Government catalog under NSN 5325-00-004-1067. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 1780378-20

✓ 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.