Nuclear Grade Fasteners Certified to NQA-1, ASME Section III, 10CFR50 Appendix B

Safety related fasteners for nuclear power applications.

DuBose National Energy manufactures and stocks a variety of ASME Section III, Nuclear Safety Related and MIL Spec fasteners. We have certified material, precision equipment and experienced personnel to manufacture your special orders to all relevant quality standards – NQA-1, ASME NCA 3800, 10CFR50B, N45.2 and more. In emergency situations, we have 24/7 programs designed to expedite every step of the process to get critical safety-related fasteners delivered rapidly.

Our standard product line of nuclear grade fasteners includes nuts, bolts, studs and washers.

In-house CNC machining produces specialty fasteners, fittings and precision machined components certified to appropriate quality standards.

Nuclear Quality Certifications

  • NQA-1
  • ASME Section III, Division 1
  • 10 CFR 50, Appendix B
  • 10 CFR 50, Part 21
  • ANSI N45.2
  • NCA 3800
nuclear grade fasteners

Hex Bolts, Hex Cap Screws

  • ANSI/ASME B18.2.1
  • Hex Cap
  • Heavy Hex
  • Square Head Bolts
  • Structural – ANSI B18.2.6
  • Drilled
  • Specials

Materials: ASME/ASTM
A/SA193 B6, B7, B8, B8M, B8S, B16
A540, All Grades
A/SA 320 Gr. L7, L43, B8 Series
A/SA-325, A/SA-449,  A/SA-490
A/SA-354 Gr. BC, BD
A/SA-453 Gr. 660A/B
A/SA-540 All Grades
A/SA-564
A/SA-307
F-593

Hex Nuts

  • ANSI/ASME B18.2.2
  • Heavy Hex Nuts
  • Finish Hex Nuts
  • Heavy/Finished Jam Nuts
  • Thin Nuts
  • Thick Nuts
  • Square Nuts

Materials: ASME/ASTM
A/SA-194 Gr. 1, 2, 2H, 3, 4, 6, 6F, 7, 7M, 8, 8F, 8M, 8R, 8S
A/SA563 Gr. A, B, C, D, DH
A/SA-540
A/SA-564
F-594
F-467, 17-4, XM19, 718
A/SA-453 Grade 660A/B

Socket Products

  • ANSI/ASME B18.3
  • Socket Cap Screws
  • Low Head
  • Button Head
  • Shoulder Screws
  • Flat Head

Materials: ASME/ASTM
A/SA-574
A/SA-193 Gr. B5, B6, B7, B8, B8M, B16, B8S
F-835
F-837
F-879
F-880
A/SA-453 Grade 660A/B

Full Threaded Rod & Threaded Studs

  • ANSI/ASME B18.31.2, B18.31.3 and IFI-136
  • Full Thread Rod
  • Full Thread Studs
  • Double End Studs
  • Closure Studs
  • Interference Fit Specials

Materials: ASME/ASTM
A/SA-193 Gr. B6, B7, B7M, B8, B8A, B8M, B16
A/SA-540, All Grades

Washers

  • ANSI/ASME B18.21.1
  • Flat Washers
  • Helical Spring Lock Washers
  • Heavy Duty Lock Washers
  • Internal / External Tooth Washers
  • Type A Washers
  • Type B Washers
  • Beveled Washers
  • Clipped Washers

Materials:
ASTM F-436 Type 1
ASTM F-436 Type 3
ASTM F-844
Carbon Steel
Stainless Steel
Alloy Steel
Zinc / Galvanized

Custom Sizes and Materials made to order.

Set Screws

  • ANSI/ASME B18.3
  • Flat Point
  • Oval Point
  • Cup Point
  • Half Dog
  • Cone Point

Materials: ASME/ASTM
Alloy Steel
Carbon Steel
Stainless Steel
ASTM A-307
ASTM F-880
ASTM F-912
A/SA-193, All Grades
A/SA-320 Gr L7, L43, B8 Series

Pins

  • ANSI/ASME B18.8.2
  • Dowel Pins
  • Taper Pins
  • Cotter Pins
  • Groove Pins

Materials: ASME/ASTM
A/SA-193 Gr. B5, B6, B7, B8, B8M, B16, B8S
A/SA-320 Gr. L7, L43, B8 series
A/SA-540 Gr. B21, B22, B23, B24
A/SA-564 Type 630
SA-453 Grade 660A/B

Machine Screws

  • ANSI B18.6.3
  • Round Head
  • Pan Head
  • Oval
  • Flat Countersunk
  • Drilled
  • Truss
  • Fillister
  • Slotted
  • Hex
  • Hex Washer Head

Materials:
Carbon Steel
Stainless Steel
Alloy Steel
Brass
Silicon Bronze

MIL Specs & Specials

Machined Bushings

Materials:
A/SA-193 Gr. B5, B6, B7, B8, B8M, B16, B8S)
A/SA-320 Gr. L7, L43, B8 series)
A/SA-540 Gr. B21, B22, B23, B24
A/SA-564 Type 630
SA-453 Grade 660A/B

Custom Sizes and Materials made to order.

Hilti Bolts, Anchor Bolts / Rods

Materials:
A-36
A-108
A-307
Carbon Steel
Stainless Steel
Alloy Steel
F-1554

Special Application Nuts

  • ANSI/ASME B18.2.2
  • Lock Nuts
  • Hex Coupling
  • Nylon Inserts
  • Cap Nuts
  • Square Nuts
  • Slotted Nuts

Materials:
Carbon Steel
Stainless Steel
Brass

Special Threaded Plugs

  • Square Head
  • Hex Head
  • Socket Head
  • NPT Thread Series

Materials:
A/SA-193 Gr. B5, B6, B7, B8, B8M, B16, B8S
A/SA-320 Gr. L7, L43, B8 series
A/SA-540 Gr. B21, B22, B23, B24
A/SA-564 Type 630
SA-453 Grade 660A/B
SA-182
F-316

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