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Technical Data Sheet
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FDA1658-6 — BOLT,RING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

FDA1658-6: BOLT,RING.

The BOLT,RING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, eye_length: 1.594 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN, shank_length: 0.840 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.680 INCHES NOMINAL IN, overall_length: 3.090 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-823-9276, 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
FDA1658-6
NSN: 5306-00-823-9276
FSC: 5306 — Bolts
CAGE: 98313 — DAVIS AIRCRAFT PRODUCTS CO., INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
eye_length1.594 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN
shank_length0.840 INCHES NOMINAL IN
thread_class2A A
thread_length0.680 INCHES NOMINAL IN
overall_length3.090 INCHES NOMINAL IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
style_designatorOBLONG, CLOSED
thread_directionRIGHT-HAND
eye_outside_width2.125 INCHES NOMINAL IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
eye_stock_diameter0.250 INCHES NOMINAL IN
NSN5306-00-823-9276
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: FDA1658-6 · 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
•
RING STOCK DIAMETER: 0.250 INCHES NOMINAL IN
•
EYE STOCK DIAMETER: 0.250 INCHES NOMINAL IN
•
RING INSIDE DIAMETER: 1.625 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2,CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.680 INCHES NOMINAL IN
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
•
SHANK LENGTH: 0.840 INCHES NOMINAL IN
•
STYLE DESIGNATOR: OBLONG, CLOSED
TECHNICAL CHARACTERISTICS
RING STOCK DIAMETER0.250 INCHES NOMINAL IN
EYE STOCK DIAMETER0.250 INCHES NOMINAL IN
RING INSIDE DIAMETER1.625 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.680 INCHES NOMINAL IN
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
SHANK LENGTH0.840 INCHES NOMINAL IN
STYLE DESIGNATOROBLONG, CLOSED
OVERALL LENGTH3.090 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.312 INCHES IN
SUBSTITUTES & CROSS-REFERENCES 1
483920Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is FDA1658-6?
FDA1658-6 is a BOLT,RING.
What parts can replace FDA1658-6?
There is 1 known substitute for FDA1658-6: 483920. Substitute compatibility should be verified for your specific system.
What is the NSN for FDA1658-6?
FDA1658-6 is cataloged in the U.S. Government catalog under NSN 5306-00-823-9276. 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.