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21603-1 — CONNECTOR,PLUG,ELECTRICAL

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

21603-1: CONNECTOR,PLUG,ELECTRICAL.

The CONNECTOR,PLUG,ELECTRICAL is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OVERALL, head_style: HEXAGON, head_height: 0.375 INCHES NOMINAL IN, thread_class: 3B ALL ENDS, thread_length: 1.250 INCHES MAXIMUM IN, connection_type: THREADED INTERNAL BOSS ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-021-6031, 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
21603-1
NSN: 5305-00-021-6031
NIINs: 000216031, 002019588, 016680058
FSC: 5305 — Screws
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
head_styleHEXAGON
head_height0.375 INCHES NOMINAL IN
thread_class3B ALL ENDS
thread_length1.250 INCHES MAXIMUM IN
connection_typeTHREADED INTERNAL BOSS ALL ENDS
fastener_length1.250 INCHES NOMINAL IN
connection_styleGASKET SEAL (BOSS) ALL ENDS
special_featuresLOCKWIRE HOLE 0.620 IN. FROM SECOND END,0.057 IN. DIA,BULKHEAD,UNEF THD SERIES,0.625 IN. THD SIZE FIRST END IN
style_designatorRIGID, SHORT CENTER WRENCHING FACILITY
thread_directionRIGHT-HAND
surface_treatmentANODIZE OVERALL
NSN5305-00-021-6031
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 21603-1 · 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
•
HEAD HEIGHT: 0.375 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.250 INCHES NOMINAL IN
•
THREAD LENGTH: 1.250 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE,GR 1 AND 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY HEAD DIM
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.375 INCHES NOMINAL IN
FASTENER LENGTH1.250 INCHES NOMINAL IN
THREAD LENGTH1.250 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE,GR 1 AND 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY HEAD DIM
WIDTH BETWEEN FLATS0.750 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE
SUBSTITUTES & CROSS-REFERENCES 3
FFS85TYPE2STYLE10PReference document
Same NSN cross-reference
Reference document — Identification reference
5305000216031Reference document
Same NSN cross-reference
Reference document — Informative reference only
5305-021-6031Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21603-1?
21603-1 is a CONNECTOR,PLUG,ELECTRICAL.
What parts can replace 21603-1?
There are 3 known substitutes for 21603-1: FFS85TYPE2STYLE10P, 5305000216031, 5305-021-6031. Substitute compatibility should be verified for your specific system.
What is the NSN for 21603-1?
21603-1 is cataloged in the U.S. Government catalog under NSN 5305-00-021-6031. This indicates validated use in U.S. government and defense supply chains.
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