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6-1-4481 — FLANGE,COMPANION,NONVEHICULAR UN

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

6-1-4481: FLANGE,COMPANION,NONVEHICULAR UN.

FLANGE,COMPANION,NONVEHICULAR UN. This part is cataloged in the U.S. Government catalog under NSN 5306-00-489-3874, 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
6-1-4481
NSN: 5306-00-489-3874
NIINs: 004893874, 012082196
FSC: 5306 — Bolts
CAGE: 92215 — HOWMET GLOBAL FASTENING SYSTEMS INC DIV TORRANCE OPERATIONS (USA)
SPECIFICATIONS
Part Number6-1-4481
NSN5306-00-489-3874
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 6-1-4481 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: HEX HEAD 0.558 IN. DIA AND 0.188 IN. THK; FASTENER 1.130 IN. LG AND 0.350 IN. DIA WITH 0.810 IN. SHAVED TO 0.250 IN. DIA AND OFFSET; THDS ARE 0.250-28UNJF-3A AND 0.530 IN. LG; ROCKWELL HARDNESS C40-45; MATL AMS5616 SSST A
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONHEX HEAD 0.558 IN. DIA AND 0.188 IN. THK; FASTENER 1.130 IN. LG AND 0.350 IN. DIA WITH 0.810 IN. SHAVED TO 0.250 IN. DIA AND OFFSET; THDS ARE 0.250-28UNJF-3A AND 0.530 IN. LG; ROCKWELL HARDNESS C40-45; MATL AMS5616 SSST A
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
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FREQUENTLY ASKED QUESTIONS
What is 6-1-4481?
6-1-4481 is a FLANGE,COMPANION,NONVEHICULAR UN.
What is the NSN for 6-1-4481?
6-1-4481 is cataloged in the U.S. Government catalog under NSN 5306-00-489-3874. 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.