Mutual Screw & Supply

MS21209C4-15 | Mil-Spec Helical Inserts | 304 Stainless Steel (90 / Pkg.)

MS21209C4-15 | Mil-Spec Helical Inserts | 304 Stainless Steel (90 / Pkg.) - Main image
$6 $10 In stock

These helical inserts are manufactured from 304 Stainless Steel. They are well suited to general fastening and assembly work.

  • Material and finish: 304 Stainless Steel
  • Applications: General fastening and assembly work

Specifications

  • Product type: Helical Inserts
  • Material: 304 Stainless Steel
  • Finish: Plain
  • Measurement type: Imperial
  • Pack quantity: 20 per package

Please note: This item is excess stock and is sold non-cancelable, non-refundable, and non-returnable. Please call us with any questions about this item before ordering.

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When it ships

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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If you need a refund

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Victoria T. ★★★★★

Used a full pack on a fabrication job last week and every single insert seated flush without a single cross-thread. The 304 stainless is noticeably tough — no galling even when I torqued them down tight. For ninety pieces at this price, they're a solid stock-up.

Edward ★★★★★

Threads cut cleanly and seated perfectly in aluminum for a dozen test holes—the 304 stainless held up without any galling or snagging. Having a full 90-count pack means I won't be rationing inserts for the next big job.

Isabella K. ★★★★★

The stainless steel threads gripped perfectly when I installed them into a tapped aluminum frame, and the entire 90-pack came neatly organized without any tangles.