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3M225A4 — INSERT,PANEL FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3M225A4: INSERT,PANEL FASTENER.

The INSERT,PANEL FASTENER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_type: THREADEDTHREADED, overall_length: 0.345 INCHES MINIMUM AND 0.345 INCHES MINIMUM AND 0.351 INCHES MAXIMUM0.351 INCHES MAXIMUM IN, shoulder_diameter: 0.370 INCHES MINIMUM AND 0.370 INCHES MINIMUM AND 0.374 INCHES MAXIMUM0.374 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, thread_size_and_series/type_designator: 0-250-28 UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 5325-01-160-4070, 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
3M225A4
NSN: 5325-01-160-4070
FSC: 5325 — Fastening Devices
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_typeTHREADEDTHREADED
overall_length0.345 INCHES MINIMUM AND 0.345 INCHES MINIMUM AND 0.351 INCHES MAXIMUM0.351 INCHES MAXIMUM IN
shoulder_diameter0.370 INCHES MINIMUM AND 0.370 INCHES MINIMUM AND 0.374 INCHES MAXIMUM0.374 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
thread_size_and_series/type_designator0-250-28 UNIFIED NATIONAL JOINT FINE (UNJF)
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5325-01-160-4070
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3M225A4 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
SHOULDER DIAMETER: 0.370 INCHES MINIMUM AND 0.370 INCHES MINIMUM AND 0.374 INCHES MAXIMUM0.374 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 0-250-28 UNIFIED NATIONAL JOINT FINE (UNJF)
•
HOLE TYPE: THREADEDTHREADED
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
OVERALL LENGTH0.345 INCHES MINIMUM AND 0.345 INCHES MINIMUM AND 0.351 INCHES MAXIMUM0.351 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
SHOULDER DIAMETER0.370 INCHES MINIMUM AND 0.370 INCHES MINIMUM AND 0.374 INCHES MAXIMUM0.374 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
THREAD SIZE AND SERIES/TYPE DESIGNATOR0-250-28 UNIFIED NATIONAL JOINT FINE (UNJF)
HOLE TYPETHREADEDTHREADED
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES 2
SL1966-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
F12CL4390-048Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 3M225A4?
3M225A4 is a INSERT,PANEL FASTENER.
What parts can replace 3M225A4?
There are 2 known substitutes for 3M225A4: SL1966-4, F12CL4390-048. Substitute compatibility should be verified for your specific system.
What is the NSN for 3M225A4?
3M225A4 is cataloged in the U.S. Government catalog under NSN 5325-01-160-4070. 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.