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Technical Data Sheet
PartsTable / COMPONENT / 12Z1131-25
12Z1131-25 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: PAN NO. 2, head_height: 0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, thread_length: 0.250 INCHES MAXIMUM IN, screw_material: STEEL.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-019-3257, 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
12Z1131-25
NSN: 5305-00-019-3257
FSC: 5305
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
head_stylePAN NO. 2
head_height0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
thread_length0.250 INCHES MAXIMUM IN
screw_materialSTEEL
fastener_length0.250 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.138 INCHES IN
screw_surface_treatmentCADMIUM AND CHROMATE OR ZINC AND CHROMATE
thread_quantity_per_inch32
NSN5305-00-019-3257
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12Z1131-25 · 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
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD CLASS: 2A A
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANCELLED FED SPEC 1ST MATERIAL RESPONSE OR QQ-W-409,GRADE 2,3 OR 4 FED SPEC 2ND MATERIAL RESPONSE
•
HEAD DIAMETER: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.250 INCHES NOMINAL IN
•
SCREW SURFACE TREATMENT: CADMIUM AND CHROMATE OR ZINC AND CHROMATE
•
HEAD STYLE: PAN NO. 2
•
SCREW MATERIAL: STEEL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2A A
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANCELLED FED SPEC 1ST MATERIAL RESPONSE OR QQ-W-409,GRADE 2,3 OR 4 FED SPEC 2ND MATERIAL RESPONSE
HEAD DIAMETER0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
FASTENER LENGTH0.250 INCHES NOMINAL IN
SCREW SURFACE TREATMENTCADMIUM AND CHROMATE OR ZINC AND CHROMATE
HEAD STYLEPAN NO. 2
SCREW MATERIALSTEEL
NOMINAL THREAD DIAMETER0.138 INCHES IN
INTERNAL DRIVE STYLESLOT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
193257Interchangeable
interchangeable cross-reference
interchangeable
2002955Interchangeable
interchangeable cross-reference
interchangeable
10-91243-4Interchangeable
interchangeable cross-reference
interchangeable
F54Interchangeable
interchangeable cross-reference
interchangeable
BM-190273 ITEM 5VMInterchangeable
interchangeable cross-reference
interchangeable
BM-190273 ITEM 5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12Z1131-25?
12Z1131-25 is a SCREW,MACHINE.
What parts can replace 12Z1131-25?
There are 9 known substitutes for 12Z1131-25: 193257, 2002955, 10-91243-4 and 6 more. Substitute compatibility should be verified for your specific system.
Is 12Z1131-25 still available?
12Z1131-25 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026