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Technical Data Sheet
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2057077-1 — BOLT,EYE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2057077-1: BOLT,EYE.

The BOLT,EYE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 416 OVERALL, shank_length: 1.240 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 1.190 INCHES MAXIMUM IN, overall_length: 2.095 INCHES NOMINAL IN, special_features: THREE TAPPED HOLES 4-40 UNC 2B IN RING. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-240-9778, 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
2057077-1
NSN: 5306-00-240-9778
FSC: 5306 — Bolts
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 416 OVERALL
shank_length1.240 INCHES NOMINAL IN
thread_class2A A
thread_length1.190 INCHES MAXIMUM IN
overall_length2.095 INCHES NOMINAL IN
special_featuresTHREE TAPPED HOLES 4-40 UNC 2B IN RING
style_designatorROUND, CLOSED
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
eye_stock_diameter0.369 INCHES MINIMUM AND 0.371 INCHES MAXIMUM IN
eye_inside_diameter0.376 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
nominal_thread_diameter0.437 INCHES IN
NSN5306-00-240-9778
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2057077-1 · 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
•
EYE STOCK DIAMETER: 0.369 INCHES MINIMUM AND 0.371 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-STD-171 MIL STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 1.190 INCHES MAXIMUM IN
•
SHANK LENGTH: 1.240 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ROUND, CLOSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.437 INCHES IN
TECHNICAL CHARACTERISTICS
EYE STOCK DIAMETER0.369 INCHES MINIMUM AND 0.371 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171 MIL STD SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH1.190 INCHES MAXIMUM IN
SHANK LENGTH1.240 INCHES NOMINAL IN
STYLE DESIGNATORROUND, CLOSED
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH2.095 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.437 INCHES IN
THREAD DIRECTIONRIGHT-HAND
DISTANCE FROM CENTER OF EYE TO SHANK END1.721 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES 1
L320000161Same 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 2057077-1?
2057077-1 is a BOLT,EYE.
What parts can replace 2057077-1?
There is 1 known substitute for 2057077-1: L320000161. Substitute compatibility should be verified for your specific system.
What is the NSN for 2057077-1?
2057077-1 is cataloged in the U.S. Government catalog under NSN 5306-00-240-9778. This indicates validated use in U.S. government and defense supply chains.
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