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766374-1 — TUBE ASSEMBLY,METAL

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

766374-1: TUBE ASSEMBLY,METAL.

The TUBE ASSEMBLY,METAL is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING TUBING, design_form: PREBENT, wall_thickness: 0.030 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN, tube_outside_diameter: 0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-588-3171, 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
766374-1
NSN: 5306-00-588-3171
NIINs: 005883171, 010502816
FSC: 5306 — Bolts
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING TUBING
design_formPREBENT
wall_thickness0.030 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
tube_outside_diameter0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
NSN5306-00-588-3171
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 766374-1 · 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: 0.062 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.358 INCHES NOMINAL IN
•
THREAD LENGTH: 1.238 INCHES MINIMUM IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM FIRST HOLE IN
•
FIRST DIAMETER FROM HEAD: 0.241 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
•
HEAD STYLE: FLAT CHAMFER
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER: 0.120 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
•
THREAD CLASS: 3A A
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.062 INCHES NOMINAL IN
FASTENER LENGTH1.358 INCHES NOMINAL IN
THREAD LENGTH1.238 INCHES MINIMUM IN
SHANK UNTHREADED HOLE DIAMETER0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM FIRST HOLE IN
FIRST DIAMETER FROM HEAD0.241 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
HEAD STYLEFLAT CHAMFER
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.120 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
THREAD CLASS3A A
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER0.698 INCHES NOMINAL FIRST HOLE IN
HEAD DIAMETER0.750 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
ASP2Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 766374-1?
766374-1 is a TUBE ASSEMBLY,METAL.
What parts can replace 766374-1?
There is 1 known substitute for 766374-1: ASP2. Substitute compatibility should be verified for your specific system.
What is the NSN for 766374-1?
766374-1 is cataloged in the U.S. Government catalog under NSN 5306-00-588-3171. 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.