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1670AS138 — Technical Data Sheet

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— · 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 BOLT,U is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304L OR STEEL COMP 316L OR STEEL COMP 321 OR STEEL COMP 347 OVERALL, style_designator: ROUND BEND, thread_direction: RIGHT-HAND, surface_treatment: PASSIVATE OVERALL, material_document_and_classification: QQ-S-763 COND A FED SPEC ALL MATERIAL RESPONSES OVERALL, surface_treatment_document_and_classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5306-01-201-9025, 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
1670AS138
NSN: 5306-01-201-9025
FSC: 5306
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 304L OR STEEL COMP 316L OR STEEL COMP 321 OR STEEL COMP 347 OVERALL
special_featuresFURNISHED WITH LIFT RING,1.250 IN. NOM WIDTH,2.880 IN. NOM LENGTH,0.188 IN. NOM THICKNESS,TWO HOLES 0.680 IN. MIN DIA AND 0.690 IN. MAX DIA IN
style_designatorROUND BEND
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
material_document_and_classificationQQ-S-763 COND A FED SPEC ALL MATERIAL RESPONSES OVERALL
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5306-01-201-9025
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1670AS138 · 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
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 COND A FED SPEC ALL MATERIAL RESPONSES OVERALL
•
STYLE DESIGNATOR: ROUND BEND
•
MATERIAL: STEEL COMP 304L OR STEEL COMP 316L OR STEEL COMP 321 OR STEEL COMP 347 OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENTPASSIVATE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 COND A FED SPEC ALL MATERIAL RESPONSES OVERALL
STYLE DESIGNATORROUND BEND
MATERIALSTEEL COMP 304L OR STEEL COMP 316L OR STEEL COMP 321 OR STEEL COMP 347 OVERALL
SPECIAL FEATURESFURNISHED WITH LIFT RING,1.250 IN. NOM WIDTH,2.880 IN. NOM LENGTH,0.188 IN. NOM THICKNESS,TWO HOLES 0.680 IN. MIN DIA AND 0.690 IN. MAX DIA IN
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
152104056InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
4300121-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MS21266-2N4.875InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
100913InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
31H1009-3InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
100503InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1670AS138?
1670AS138 is a BOLT,U.
What parts can replace 1670AS138?
There are 9 known substitutes for 1670AS138: 152104056, 4300121-1, MS21266-2N4.875 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1670AS138?
1670AS138 is cataloged in the Federal Logistics Information System under NSN 5306-01-201-9025. This indicates validated use in U.S. government and defense supply chains.
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Last verified: September 2026