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MS51 — STATION,FIRE ALARM,MANUAL

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MS51: STATION,FIRE ALARM,MANUAL.

The STATION,FIRE ALARM,MANUAL is a the manufacturer industrial component. Key specifications include material: PLASTIC HOUSING, head_style: PAN, head_height: 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN, construction: ONE-PIECE, thread_class: 2A A, base_diameter: 0.375 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-494-7333, 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
MS51
NSN: 5305-00-494-7333
NIINs: 004947333, 006427280, 015135936
FSC: 5305 — Screws
CAGE: 35351 — GE AVIATION SYSTEMS LLC (USA)
SPECIFICATIONS
materialPLASTIC HOUSING
head_stylePAN
head_height0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
constructionONE-PIECE
thread_class2A A
base_diameter0.375 INCHES NOMINAL IN
head_diameter0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
terminal_typeSCREW
thread_length0.169 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
maximum_height3.292 FEET FT
screw_materialSTEEL CORROSION RESISTING OR STEEL
fastener_length0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
NSN5305-00-494-7333
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS51 · 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: 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: OXIDE
•
FASTENER LENGTH: 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,300 SERIES FED SPEC 1ST MATERIAL RESPONSE OR 66,300 SERIES FED STD 1ST MATERIAL RESPONSE OR COMP 16-18 OR 18-8 ASSN STD 2ND MATERIAL RESPONSE
•
THREAD LENGTH: 0.169 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.112 INCHES IN
•
HEAD STYLE: PAN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTOXIDE
FASTENER LENGTH0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,300 SERIES FED SPEC 1ST MATERIAL RESPONSE OR 66,300 SERIES FED STD 1ST MATERIAL RESPONSE OR COMP 16-18 OR 18-8 ASSN STD 2ND MATERIAL RESPONSE
THREAD LENGTH0.169 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.112 INCHES IN
HEAD STYLEPAN
THREAD DIRECTIONRIGHT-HAND
NONDEFINITIVE SPEC/STD DATA3 TYPE AND 9C STYLE
SCREW MATERIALSTEEL CORROSION RESISTING OR STEEL
SUBSTITUTES & CROSS-REFERENCES 8
089-6344-04Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
284-516-0404Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
10012-2021Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
P343-0019-000Reference document
Same NSN cross-reference
Reference document — Secondary reference
69-1800-31Reference document
Same NSN cross-reference
Reference document — Secondary reference
10027010-111Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS51?
MS51 is a STATION,FIRE ALARM,MANUAL.
What parts can replace MS51?
There are 8 known substitutes for MS51: 089-6344-04, 284-516-0404, 10012-2021 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51?
MS51 is cataloged in the U.S. Government catalog under NSN 5305-00-494-7333. This indicates validated use in U.S. government and defense supply chains.
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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.