Machine shops · Massachusetts

Keystone Precision & Engineering

Pepperell, MA · ~35 workers · 6 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
1.6
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Keystone Precision & Engineering runs at 50% of its industry's injury rate - far safer than the typical Machine shops workplace, earning a grade A.

Keystone Precision & Engineering: 1.6 TCR = 50% of Machine shops BLS 3.3 · 6y Form 300A (see methodology below)

Keystone Precision & Engineering safety composite

Keystone Precision & Engineering scores strongest on total case rate (tcr) (safer than 79% of same-industry peers) and weakest on fatalities (safer than 50%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

C

70/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
B 1.64 per 100 workers

Safer than 79% of industry peers

DART rate
B 0 per 100 workers

Safer than 75% of industry peers

Fatalities
D 0

Safer than 50% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

Keystone Precision & Engineering held a steady TCR band

Keystone Precision & Engineering's TCR held near 0.0 from 0.0 in 2019 to 0.0 in 2024. Peak filing year was 2022 at 5.0 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2019=0.0 · 2020=0.0 · 2021=0.0 · 2022=5.0 · 2023=4.8 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 332710 · Pepperell, MA AT/BELOW-IND · SMALL

Grade A · TCR 1.6 · 50% of ind

  • DART 0.0 DART
  • RANK #15/54
  • PHOTO Marion Manufacturing
  • BOOK 6y book
  • INJ 4 inj
  • SIZE ~35 FTE

Nearest TCR peer: Marion Manufacturing (0.0 TCR gap)

Read with this employer → · Industry book → · Massachusetts employers → · Look up another →

Keystone Precision & Engineering in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Keystone Precision & Engineering averages 1.6 TCR (50% of the Machine shops BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Keystone Precision & Engineering TCR series: 2019=0 · 2020=0 · 2021=0 · 2022=5 · 2023=4.8 · 2024=0 · BLS 3.3

Where Keystone Precision & Engineering falls in its industry

1,821 Machine shops establishments

Safer than 79% of graded establishments in this industry, whose median TCR is 3.5.

More dangerous than peersSafer than peers

Narrower to Massachusetts alone (the establishments it most directly competes with for workers and contracts): ranked #15 safest of 54 Machine shops employers in Massachusetts.

Keystone Precision & Engineering (35 employees, TCR 1.6) among 29 same-industry peers, split at the industry median of 48 employees and a TCR of 3.5 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 050100150200250 051015 Average employees Total Case Rate Keystone Precision & Engineering
Keystone Precision & Engineering (35 employees, TCR 1.6) among 29 same-industry peers, split at the industry median of 48 employees and a TCR of 3.5

Keystone Precision & Engineering has fewer employees than the Machine shops median and a lower injury rate than the industry's median TCR of 3.5. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year TCR DART Injuries Illnesses Fatalities
2024 0.0 0.0 0 0 0
2023 4.8 0.0 2 0 0
2022 5.0 5.0 2 0 0
2021 0.0 0.0 0 0 0
2020 0.0 0.0 0 0 0
2019 0.0 0.0 0 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

332710 · MA · Pepperell

1,821 Machine shops employers nationwide with a credible TCR · 10,108 rated employers in Massachusetts with headcount on file · 3 employers in Pepperell, MA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Marion Manufacturing 1.6 TCR
NAICS-TCR PM Mold Company, LLC 1.6 TCR
NAICS-TCR Dynomax Inc. D6 1.6 TCR
NAICS-TCR Loughmiller Machine, Tool & Design 1.6 TCR
STATE-SIZE Ethos Fitchburg 35 FTE
STATE-SIZE Resinate, Inc. - Worcester 35 FTE
STATE-SIZE TIS - MA 35 FTE
STATE-SIZE Supreme Systems, Inc. NE 35 FTE
CITY-NEAR 1A Auto MA Pepperell 25 FTE
CITY-NEAR Astron, Inc. 22 FTE
NAT-TCR William B Hopke 1.6 TCR
NAT-TCR Jabil Inc 1.6 TCR
NAT-TCR Klune Spanish Fork 1.6 TCR
NAT-TCR Aerospace Coatings International, Inc. 1.6 TCR
NAT-SIZE Pestinger Heating Air Electrical,Inc. 35 FTE
NAT-SIZE Beckenhauer Construction, Inc. 35 FTE
NAT-SIZE St. Louis,MO - 469 35 FTE
NAT-SIZE Deepwater Corrosion Services 35 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2024, 2023, 2022, 2021, 2020, 2019. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.