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70-26915 ITEM 28 — Technical Data Sheet

✓ 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,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY R-405 OR STEEL COMP 630 OVERALL, head_style: FLAT CHAMFER, head_height: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.363 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, thread_length: 0.313 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5305-01-380-9178, 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
70-26915 ITEM 28
NSN: 5305-01-380-9178
FSC: 5305
CAGE: 07270 — MOOG INC. DBA AMPAC-ISP CORP (USA)
SPECIFICATIONS
materialNICKEL ALLOY R-405 OR STEEL COMP 630 OVERALL
head_styleFLAT CHAMFER
head_height0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.363 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
thread_length0.313 INCHES NOMINAL IN
fastener_length0.375 INCHES NOMINAL IN
locking_featurePATCH OR STRIP OR PELLET LOCKING FEATURE
thread_directionRIGHT-HAND
nominal_thread_diameter0.250 INCHES IN
thread_quantity_per_inch20
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-380-9178
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 70-26915 ITEM 28 · 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
•
FASTENER LENGTH: 0.375 INCHES NOMINAL IN
•
HEAD DIAMETER: 0.363 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
THREAD QUANTITY PER INCH: 20
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 CLA FED SPEC 1ST MATERIAL RESPONSE OR ASTM A564 ASSN STD 2ND MATERIAL RESPONSE OVERALL
•
MATERIAL: NICKEL ALLOY R-405 OR STEEL COMP 630 OVERALL
•
LOCKING FEATURE: PATCH OR STRIP OR PELLET LOCKING FEATURE
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.375 INCHES NOMINAL IN
HEAD DIAMETER0.363 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD DIAMETER0.250 INCHES IN
THREAD QUANTITY PER INCH20
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 CLA FED SPEC 1ST MATERIAL RESPONSE OR ASTM A564 ASSN STD 2ND MATERIAL RESPONSE OVERALL
MATERIALNICKEL ALLOY R-405 OR STEEL COMP 630 OVERALL
LOCKING FEATUREPATCH OR STRIP OR PELLET LOCKING FEATURE
THREAD LENGTH0.313 INCHES NOMINAL IN
THREAD CLASS2A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
583RH-3/16-3/8SInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
JF-6InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
56801InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
07804InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
M353InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
25987InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 70-26915 ITEM 28?
70-26915 ITEM 28 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 70-26915 ITEM 28?
There are 7 known substitutes for 70-26915 ITEM 28: 583RH-3/16-3/8S, JF-6, 56801 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 70-26915 ITEM 28?
70-26915 ITEM 28 is cataloged in the Federal Logistics Information System under NSN 5305-01-380-9178. This indicates validated use in U.S. government and defense supply chains.
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Last verified: September 2026