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    $91.06 - $91.06
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    M60-5.50 Class 4 Plain Finish Steel Round Slotted Castle Nut

    CONTRACTOR SELECT
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    CONTRACTOR SELECT — Castle Nuts — M60-5.50 Class 4 Plain Finish Steel Round Slotted Castle Nut Designed for professional use, this CONTRACTOR SELEC...

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    $201.84 - $201.84
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  • $16.24 - $16.24
    $16.24
    $35.14
    $35.14 - $35.14
    $35.14

    9/16"-18 Grade 2 Plain Finish Carbon Steel Round Slotted Castle Nut, 10 pk.

    CONTRACTOR SELECT
    In stock

    Mfr #: U12020.056.0001 For Bunn 5770.0001 highquality replacement filter designed for use with for bunn 5770 . 0001 coffee makers . improves coffe...

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    $35.14
  • $11.60 - $11.60
    $11.60
    $24.90
    $24.90 - $24.90
    $24.90

    2"-12 Grade 2 Plain Finish Carbon Steel Round Slotted Castle Nut

    CONTRACTOR SELECT
    In stock

    CONTRACTOR SELECT — Castle Nuts — 2"-12 Grade 2 Plain Finish Carbon Steel Round Slotted Castle Nut A practical Castle Nuts by CONTRACTOR SELECT int...

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    $11.60 - $11.60
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    $24.90
    $24.90 - $24.90
    $24.90
  • $10.44 - $10.44
    $10.44
    $22.18
    $22.18 - $22.18
    $22.18

    7/8"-14 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 10 pk.

    CONTRACTOR SELECT
    In stock

    CONTRACTOR SELECT — Castle Nuts — 7/8"-14 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 10 pk. CONTRACTOR SELECT Castle Nuts built for consi...

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    $10.44 - $10.44
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    $22.18
    $22.18 - $22.18
    $22.18
  • $6.96 - $6.96
    $6.96
    $17.22
    $17.22 - $17.22
    $17.22

    5/16"-18 Grade 2 Zinc Plated Finish Low Carbon Steel Round Slotted Castle Nut, 50 pk.

    CONTRACTOR SELECT
    In stock

    Mfr #: 287050-PG Price For: Each Basic Material: Low Carbon Steel Fastener Finish: Zinc Plated Material Grade: Grade 2 Nut Standards: ASTM 563 Fas...

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    $6.96 - $6.96
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    $17.22
    $17.22 - $17.22
    $17.22
  • $0.00 - $0.00
    $0.00
    $359.09
    $359.09 - $359.09
    $359.09

    1-14 Slotted Hex Nuts/Steel/Plain , 100PK

    NEWPORT FASTENERS
    In stock

    NEWPORT FASTENERS — Castle Nuts — 1-14 Slotted Hex Nuts/Steel/Plain , 100PK This Castle Nuts from NEWPORT FASTENERS supports day-to-day operations ...

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    $359.09
    $359.09 - $359.09
    $359.09
  • $22.04 - $22.04
    $22.04
    $47.28
    $47.28 - $47.28
    $47.28

    1-3/8"-6 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 5 pk.

    CONTRACTOR SELECT
    In stock

    CONTRACTOR SELECT — Castle Nuts — 1-3/8"-6 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 5 pk. CONTRACTOR SELECT Castle Nuts built for consi...

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    $22.04 - $22.04
    $22.04
    $47.28
    $47.28 - $47.28
    $47.28
  • $13.92 - $13.92
    $13.92
    $33.89
    $33.89 - $33.89
    $33.89

    1/2"-20 Grade 2 Zinc Plated Finish Low Carbon Steel Round Slotted Castle Nut, 25 pk.

    CONTRACTOR SELECT
    In stock

    Mfr #: 287264-PG Price For: Each Basic Material: Low Carbon Steel Fastener Finish: Zinc Plated Material Grade: Grade 2 Nut Standards: ASTM 563 Fas...

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    $13.92 - $13.92
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    $33.89
    $33.89 - $33.89
    $33.89
  • $32.48 - $32.48
    $32.48
    $72.19
    $72.19 - $72.19
    $72.19

    M14-2.00 Class 4 Plain Finish Steel Round Slotted Castle Nut, 50 pk.

    CONTRACTOR SELECT
    In stock

    CONTRACTOR SELECT — Castle Nuts — M14-2.00 Class 4 Plain Finish Steel Round Slotted Castle Nut, 50 pk. CONTRACTOR SELECT Castle Nuts built for cons...

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    $32.48 - $32.48
    $32.48
    $72.19
    $72.19 - $72.19
    $72.19
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    $30.16 - $30.16
    $30.16
    $66.55
    $66.55 - $66.55
    $66.55

    M16-2.00 Class 4 Plain Finish Steel Round Slotted Castle Nut, 50 pk.

    CONTRACTOR SELECT
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    CONTRACTOR SELECT — Castle Nuts — M16-2.00 Class 4 Plain Finish Steel Round Slotted Castle Nut, 50 pk. Designed for professional use, this CONTRACT...

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    $30.16 - $30.16
    $30.16
    $66.55
    $66.55 - $66.55
    $66.55
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  • $19.72 - $19.72
    $19.72
    $42.63
    $42.63 - $42.63
    $42.63

    5/8"-11 Grade 2H Plain Finish Steel Round Slotted Castle Nut, 25 pk.

    CONTRACTOR SELECT
    In stock

    Mfr #: 352188G Price For: Each Basic Material: Steel Fastener Finish: Plain Material Grade: Grade 2H Fastener Thread Type: UNC Nut Standards: ASME...

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    $19.72 - $19.72
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    $42.63
    $42.63 - $42.63
    $42.63
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    $0.00 - $0.00
    $0.00
    $17.83
    $17.83 - $17.83
    $17.83

    M30 CASTLE NUT ZINC

    SUBURBAN BOLT AND SUPPLY
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    SUBURBAN BOLT AND SUPPLY — Castle Nuts — M30 CASTLE NUT ZINC This Castle Nuts from SUBURBAN BOLT AND SUPPLY supports day-to-day operations where pr...

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    $0.00 - $0.00
    $0.00
    $17.83
    $17.83 - $17.83
    $17.83
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  • $9.28 - $9.28
    $9.28
    $19.83
    $19.83 - $19.83
    $19.83

    1/2"-13 Grade 2H Plain Finish Steel Round Slotted Castle Nut, 5 pk.

    CONTRACTOR SELECT
    In stock

    Mfr #: U12040.050.0001 Price For: Each Fastener Thread Direction: Right Hand Item: Castle Nut Fastener Thread Type: UNC Nut Style: Round Slotted N...

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    $9.28 - $9.28
    $9.28
    $19.83
    $19.83 - $19.83
    $19.83
  • $6.38 - $6.38
    $6.38
    $13.60
    $13.60 - $13.60
    $13.60

    1/2"-20 Grade 5 Zinc Plated Finish Steel Round Slotted Castle Nut, 50 pk.

    CONTRACTOR SELECT
    In stock

    CONTRACTOR SELECT — Castle Nuts — 1/2"-20 Grade 5 Zinc Plated Finish Steel Round Slotted Castle Nut, 50 pk. A practical Castle Nuts by CONTRACTOR S...

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    $6.38 - $6.38
    $6.38
    $13.60
    $13.60 - $13.60
    $13.60
  • $37.12 - $37.12
    $37.12
    $82.77
    $82.77 - $82.77
    $82.77

    M12-1.75 Class 4 Plain Finish Steel Round Slotted Castle Nut, 100 pk.

    CONTRACTOR SELECT
    In stock

    CONTRACTOR SELECT — Castle Nuts — M12-1.75 Class 4 Plain Finish Steel Round Slotted Castle Nut, 100 pk. A practical Castle Nuts by CONTRACTOR SELEC...

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    $37.12 - $37.12
    $37.12
    $82.77
    $82.77 - $82.77
    $82.77
  • $22.62 - $22.62
    $22.62
    $49.09
    $49.09 - $49.09
    $49.09

    1-3/4"-12 Grade 8 Plain Finish Carbon Steel Round Slotted Castle Nut

    CONTRACTOR SELECT
    In stock

    CONTRACTOR SELECT — Castle Nuts — 1-3/4"-12 Grade 8 Plain Finish Carbon Steel Round Slotted Castle Nut A practical Castle Nuts by CONTRACTOR SELECT...

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    $22.62 - $22.62
    $22.62
    $49.09
    $49.09 - $49.09
    $49.09
  • $32.48 - $32.48
    $32.48
    $71.09
    $71.09 - $71.09
    $71.09

    1-3/4"-5 Grade 2H Plain Finish Steel Round Slotted Castle Nut

    CONTRACTOR SELECT
    In stock

    CONTRACTOR SELECT — Castle Nuts — 1-3/4"-5 Grade 2H Plain Finish Steel Round Slotted Castle Nut Designed for professional use, this CONTRACTOR SELE...

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    $32.48 - $32.48
    $32.48
    $71.09
    $71.09 - $71.09
    $71.09
  • $8.12 - $8.12
    $8.12
    $17.90
    $17.90 - $17.90
    $17.90

    1/4"-20 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 100 pk.

    CONTRACTOR SELECT
    In stock

    CONTRACTOR SELECT — Castle Nuts — 1/4"-20 Grade 5 Plain Finish Steel Round Slotted Castle Nut, 100 pk. Designed for professional use, this CONTRACT...

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    $8.12 - $8.12
    $8.12
    $17.90
    $17.90 - $17.90
    $17.90
  • $0.00 - $0.00
    $0.00
    $11.03
    $11.03 - $11.03
    $11.03

    3/4"-10 Zinc Plated Steel Coarse Thread Slotted Hex Nuts 4PK

    MIDWEST FASTENER
    In stock

    MIDWEST FASTENER — Castle Nuts — 3/4"-10 Zinc Plated Steel Coarse Thread Slotted Hex Nuts 4PK Designed for professional use, this MIDWEST FASTENER ...

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    $0.00 - $0.00
    $0.00
    $11.03
    $11.03 - $11.03
    $11.03
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    $0.00 - $0.00
    $0.00
    $11.19
    $11.19 - $11.19
    $11.19

    3/8"-16 Zinc Plated Steel Coarse Thread Slotted Hex Nuts 1 12PK

    MIDWEST FASTENER
    Contact for availability

    MIDWEST FASTENER — Castle Nuts — 3/8"-16 Zinc Plated Steel Coarse Thread Slotted Hex Nuts 1 12PK Designed for professional use, this MIDWEST FASTEN...

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    $11.19
    $11.19 - $11.19
    $11.19
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  • $0.00 - $0.00
    $0.00
    $9.19
    $9.19 - $9.19
    $9.19

    7/16"-14 Zinc Plated Steel Coarse Thread Slotted Hex Nuts 8PK

    MIDWEST FASTENER
    In stock

    MIDWEST FASTENER — Castle Nuts — 7/16"-14 Zinc Plated Steel Coarse Thread Slotted Hex Nuts 8PK MIDWEST FASTENER Castle Nuts built for consistent pe...

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    $0.00 - $0.00
    $0.00
    $9.19
    $9.19 - $9.19
    $9.19
  • $5.80 - $5.80
    $5.80
    $12.23
    $12.23 - $12.23
    $12.23

    9/16"-18 Grade 5 Zinc Plated Finish Steel Round Slotted Castle Nut, 25 pk.

    CONTRACTOR SELECT
    In stock

    Mfr #: 351164G Engine Installation Gasket set includes everything but the rear main and valve stem seals. The easy-to-learn part number is highly ...

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    $5.80 - $5.80
    $5.80
    $12.23
    $12.23 - $12.23
    $12.23
  • $5.22 - $5.22
    $5.22
    $11.52
    $11.52 - $11.52
    $11.52

    Hex Nut, 1-1/4-12, Plain, Grade 5

    CONTRACTOR SELECT
    In stock

    CONTRACTOR SELECT — Castle Nuts — Hex Nut, 1-1/4-12, Plain, Grade 5 CONTRACTOR SELECT Castle Nuts built for consistent performance in maintenance, ...

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    $5.22 - $5.22
    $5.22
    $11.52
    $11.52 - $11.52
    $11.52
  • $189.66 - $189.66
    $189.66
    $411.63
    $411.63 - $411.63
    $411.63

    3"-4 Grade 8 Plain Finish Carbon Steel Round Slotted Castle Nut

    CONTRACTOR SELECT
    In stock

    Mfr #: U12030.300.0001 Price For: Each Material Grade: Grade 8 Fastener Thread Direction: Right Hand Width Across Flats: 4 1/2 in Dia./Thread Siz...

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    $189.66 - $189.66
    $189.66
    $411.63
    $411.63 - $411.63
    $411.63

About ALL

ALL products for contractor, maintenance, and facility purchasing.

This collection brings together all and related supplies to help buyers move from a broad category into specific products with less guesswork. It is designed for contractors, maintenance teams, facility buyers, and service crews who need practical product information, clear internal links, and easy access to relevant items.

What you can find in this collection

  • All and related supplies
  • Product options commonly used in contractor, maintenance, and facility purchasing
  • Examples such as 16 Oz 830-1824 Raw Sienna/Yellow Oxide Cal-Tint II Universal Colorant, Cadet3 Tank Cover For 4021 White, and JL Industries Diamond Series Galvannealed Steel Roof Hatch, 36 in x 30 in
  • 36,085 product listings organized under this category

How to choose the right products

  • Start with the job application, then compare size, material, rating, finish, compatibility, and package quantity.
  • For replacement or repair work, check the product title, specifications, dimensions, and manufacturer part number before ordering.
  • Use the linked product examples to move from this category page into specific product pages with more detailed information.

Common applications

  • Commercial and industrial maintenance
  • Contractor jobsite purchasing
  • Facility repair and replacement work
  • Shop, warehouse, and service-team replenishment

Product examples

These internal links point to canonical product pages, helping customers and search engines move from this collection hub into relevant product detail pages.

Frequently asked questions

How do I compare all products?

Compare the application, size, material, rating, compatibility, manufacturer part number, and package quantity. For fitted or replacement parts, verify dimensions and specifications before ordering.

Why is this all collection useful?

A clear collection page helps buyers understand the category, find related product groups, and reach individual product pages faster. It also gives search engines better context for crawling and indexing related products.

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