3M Skull Screws threaded foam earplugs, gray spiral design

Threaded Foam Earplugs That Stay Secure During Motion – 3M Industrial Hearing Protection (81300, 120 Pairs)

Professional-Grade Skull Screws Earplugs for Active Work Environments

Skull Screws earplugs feature a unique spiral shape for a confident grip and reliable seal during movement. They provide a 32 dB NRR to help protect hearing in loud environments and are easy to insert—even with gloves on.

Great for construction, welding, manufacturing, maintenance, and any job with frequent bending, climbing, or repositioning.

Key Features & Benefits

Product Features Overview
Feature Benefit
Threaded Screw Design Spiral ridges create multiple contact points that help the plug stay put during motion while maintaining a consistent seal.
Easy Glove Insertion Textured surface offers positive grip for twisting in or out—no rolling required—useful with dirty hands or while wearing gloves.
Extended Comfort Foam Soft polyurethane foam compresses easily and expands gradually for a custom-feeling seal with reduced pressure points over long shifts.
Resilient in Tough Conditions Performance-focused surface and foam resist sweat and light oils so the seal stays consistent in hot, busy environments.
Hygienic, Efficient Packaging Individually dispensed pairs support cleanliness and make crew-wide distribution fast for pre-shift PPE checks.

Perfect for High-Movement Industrial Applications

  • Construction sites with heavy machinery and frequent repositioning.
  • Welding and metal fabrication tasks.
  • Manufacturing and maintenance in loud plants.
  • Confined-space work and awkward positions.

Technical Specifications

3M Skull Screws Earplugs – Complete Specifications
Specification Detail
Brand 3M
Model Number 81300 (P1300)
Noise Reduction Rating 32 dB NRR
Material Polyurethane foam
Design Uncorded, threaded spiral
Quantity 120 pairs per box
Size Universal fit
Standards CSA Class AL

Installation & Usage

  1. With clean hands or gloves, align the earplug and gently twist to seat.
  2. Hold for 5–10 seconds to allow the foam to expand and seal.
  3. Remove with a slow counter-twist. Replace if soiled or after one shift.

Frequently Asked Questions

How do Skull Screws compare to regular foam earplugs?

The threaded spiral design helps them stay in place during movement and makes insertion simpler—especially with gloves—while still delivering 32 dB NRR.

Are these comfortable for long shifts?

Yes. The soft PU foam expands gradually to seal without harsh pressure points, making them suitable for extended wear.

Do I need to roll them before inserting?

No rolling is required. Lightly compress and twist into place.

What’s the NRR?

They provide a Noise Reduction Rating of 32 dB and meet CSA Class AL for occupational hearing protection.

Q: Compare to regular foam? A: Threaded spiral grips securely and inserts easily, 32 dB NRR. Q: Comfortable for long shifts? A: Soft PU foam seals without pressure points. Q: Roll-down needed? A: No; compress slightly and twist. Q: NRR? A: 32 dB; CSA Class AL.

Get Reliable Hearing Protection That Stays Put

Skull Screws earplugs deliver a secure fit, quick insertion, and dependable attenuation for busy, high-movement jobs.

Order your 120-pair box today.

About the Brand

3M

View All 3M Products

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