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121271 — REACTOR

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

121271: REACTOR.

The REACTOR is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 863, end_style: VERTEX CENTER OR ABOVE, head_style: FLAT FILLISTER, ring_style: STRAIGHT GAP, body_length: 0.331 INCHES NOMINAL IN, thread_class: 2B. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-713-2569, 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
121271
NSN: 5325-00-713-2569
NIINs: 007132569, 009772780, 012490986, 013080241, 016258948
FSC: 5325 — Fastening Devices
CAGE: 60145 — AEROSTAR GLOBAL LOGISTICS, INC. DBA AEROSTAR TECHNICAL SERVICES (USA)
SPECIFICATIONS
materialCOPPER ALLOY 863
end_styleVERTEX CENTER OR ABOVE
head_styleFLAT FILLISTER
ring_styleSTRAIGHT GAP
body_length0.331 INCHES NOMINAL IN
thread_class2B
usage_designEXTERNAL
rating_methodWINDING TURNS SINGLE COMPONENT SINGLE WINDING
turn_quantity6 SINGLE COMPONENT SINGLE WINDING
inclosure_typeOPEN
fastener_length0.500 INCHES NOMINAL IN
inductance_typeFIXED
NSN5325-00-713-2569
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 121271 · 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
•
USAGE DESIGN: EXTERNAL
•
END STYLE: VERTEX CENTER OR ABOVE
•
MATERIAL DIAMETER: 0.0915 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-428, TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
OUTSIDE DIAMETER: 1.464 INCHES NOMINAL IN
•
INSIDE DIAMETER: 1.271 INCHES MINIMUM AND 1.291 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL
END STYLEVERTEX CENTER OR ABOVE
MATERIAL DIAMETER0.0915 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-428, TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER1.464 INCHES NOMINAL IN
INSIDE DIAMETER1.271 INCHES MINIMUM AND 1.291 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESTRAIGHT GAP
SURFACE TREATMENTENAMEL
SUBSTITUTES & CROSS-REFERENCES 2
5365007132569Reference document
Same NSN cross-reference
Reference document — Informative reference only
7263772Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 121271?
121271 is a REACTOR.
What parts can replace 121271?
There are 2 known substitutes for 121271: 5365007132569, 7263772. Substitute compatibility should be verified for your specific system.
What is the NSN for 121271?
121271 is cataloged in the U.S. Government catalog under NSN 5325-00-713-2569. 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.