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673051 — RELAY,ELECTROMAGNETIC

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

673051: RELAY,ELECTROMAGNETIC.

The RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, head_height: 0.140 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.437 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN, fastener_length: 0.531 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-358-5376, 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
673051
NSN: 5305-00-358-5376
NIINs: 003585376, 004530940, 015808844
FSC: 5305 — Screws
CAGE: 58275 — SASCO INC CANADIAN DIV
SPECIFICATIONS
materialSTEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1021 OR STEEL COMP 1527 OR STEEL COMP 1023 OR STEEL COMP 1030 OVERALL
head_styleHEXAGON
head_height0.140 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
thread_class2A A
thread_length0.437 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
fastener_length0.531 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
washer_quantity1
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_between_flats0.328 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
internal_drive_styleSLOT
primary_washer_styleSPLIT HELICAL RING
NSN5305-00-358-5376
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 673051 · 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: 0.140 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.531 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.437 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-634 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-633 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-631 FED SPEC 3RD MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.216 INCHES IN
•
HEAD STYLE: HEXAGON
•
PRIMARY WASHER STYLE: SPLIT HELICAL RING
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.140 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
FASTENER LENGTH0.531 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.437 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-634 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-633 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-631 FED SPEC 3RD MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.216 INCHES IN
HEAD STYLEHEXAGON
PRIMARY WASHER STYLESPLIT HELICAL RING
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.328 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
855561Reference document
Same NSN cross-reference
Reference document — Secondary reference
101-199SReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 673051?
673051 is a RELAY,ELECTROMAGNETIC.
What parts can replace 673051?
There are 2 known substitutes for 673051: 855561, 101-199S. Substitute compatibility should be verified for your specific system.
What is the NSN for 673051?
673051 is cataloged in the U.S. Government catalog under NSN 5305-00-358-5376. 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.