Hammond H1SRR48U31BK 48U Square-Hole Rack Rails for 31.5" Cabinets
Ships from and sold by A5 IT
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Create Free Business AccountKey Features
- 48U usable mounting height — 84.00 in (2134 mm) — for 31.50 in (800 mm) wide cabinets
- EIA-310 square-hole mounting with 0.38 in square holes on typical EIA spacing
- Heavy-duty 12-gauge mild steel rails for rigid support of servers, switches and AV gear
- Silkscreened 1U markings at 1.62 in (41 mm) increments for fast, accurate equipment alignment
- Sold as a matched pair; includes all required strut mounting hardware
- Designed for H1, HWF, RCK and NWC cabinet series — replace, add or convert rails without changing the cabinet
- Textured black powder coat finish (painted thin film black), RoHS compliant
- TAA-compliant and USMCA compliant, made in Canada in an ISO 9001 certified facility
The H1SRR48U31BK is a matched pair of 19-inch mounting rack rails with EIA-310 square-hole punching, sized for 48U of usable mounting in 31.50 in (800 mm) wide cabinets. It is intended for IT, telecommunications, industrial and AV teams who need to replace damaged rails, add mounting positions, or convert an existing Hammond cabinet from threaded to square-hole mounting without replacing the cabinet itself.
Rails in the H1R Series are made from heavy-duty 12-gauge steel and finished in a textured black powder coat that is RoHS compliant, giving a rigid mounting platform for servers, switches, patch panels, UPS systems and industrial electronics. The drawing for this part specifies 0.38 in square holes on typical EIA spacing, 1.62 in (41 mm) 1U increments and 18.35 in (466 mm) 19-inch mounting width, with silkscreened U markings to simplify equipment alignment and future expansion.
Usable mounting height for H1SRR48U31BK is 48U / 84.00 in (2134 mm), and the pair is designed specifically for H1, HWF, RCK and NWC cabinet series. Slotted strut mounting features (4X 0.44 x 0.75 slots) are provided, and the series includes all required strut mounting hardware. Rails ship as a pair with a shipping weight of 45 lbs (20.41 kg).
Built in Canada in an ISO 9001 certified facility, this part is TAA-compliant and USMCA compliant, and is RoHS and REACH compliant. Mild steel construction, ECCN EAR99 and tariff code 9403.10.0040 are listed for procurement and export documentation, along with UPC 623980803586 and UNSPSC 43201618.
Ideal For
- Replacing damaged or worn rack rails in H1, HWF, RCK or NWC cabinets
- Converting cabinets from threaded to square-hole mounting
- Adding additional 19-inch rack mounting locations in 31.5 in wide cabinets
- Cabinet refurbishment and custom cabinet configurations
- Mounting servers, switches, patch panels, UPS and AV components
Overview
| Series | H1R Series Mounting Rack Rails |
| Sold As | Pair |
| Part Number | H1SRR48U31BK |
| Included Hardware | All required strut mounting hardware |
| Short Description | 48U SQUARE HOLE RACK RAILS |
| Threaded 10-32 Equivalent Part | H1TRR48U31BK |
Dimensions
| Rail Height (Drawing) | 84.03 in (2134 mm), 48U |
| Intended Cabinet Width | 31.50 in (800 mm) |
| Rail Section (Top View, Drawing) | 5.14 in (131 mm) x 2.00 in (51 mm) |
Identifiers
| UPC | 623980803586 |
| ECCN | EAR99 |
| UNSPSC | 43201618 |
| GTIN-14 | 00623980803586 |
| Tariff Code | 9403.10.0040 |
| Country Of Origin | CA |
| UPC W/o Check Digit | 62398080358 |
Rack Mounting
| U Markings | Silkscreened U markings |
| Mounting Width | 18.35 in (466 mm) — 19" mounting |
| Square Hole Size | 0.38 in square, typical EIA spacing |
| Mounting Hole Style | EIA-310 square hole |
| Rack Unit Increment | 1.62 in (41 mm) = 1U |
| Strut Mounting Slots | 4X 0.44 x 0.75 slot |
| Usable Mounting Height | 84.00 in (2134 mm) |
| Equipment Compatibility | Standard 19-inch rack equipment |
| Usable Mounting Rack Units | 48U |
Packaging & Shipping
| Shipping Weight | 45 lbs (20.41 kg) |
Construction & Finish
| Gauge | 12-gauge steel |
| Finish | Textured black powder coat (painted thin film black) |
| Material | Mild Steel |
Compliance & Certifications
| Standards | TAA-compliant |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
| USMCA Compliant | Yes |
| Manufacturing Facility | ISO 9001 certified, North America |
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Frequently Asked Questions
Is H1SRR48U31BK sold individually or as a pair?▾
It is sold as a matched pair, and the series includes all required strut mounting hardware for installation.
Which cabinets do these rails fit?▾
They are designed for H1, HWF, RCK and NWC cabinet series. This part number is listed under 19" mounting rails for 31.5 in (800 mm) wide cabinets.
What mounting hole style do these rails use?▾
H1SRR48U31BK uses EIA-310 square-hole mounting with 0.38 in square holes on typical EIA spacing. If you need 10-32 threaded holes instead, the equivalent part is H1TRR48U31BK.
How much usable mounting height do I get?▾
48U, equal to 84.00 in (2134 mm) of usable mounting height, with 1U increments of 1.62 in (41 mm).
Can I convert a threaded cabinet to square-hole mounting with these rails?▾
Yes. The H1R Series lets cabinet owners replace damaged rails, add mounting positions, or convert between threaded and square-hole mounting styles without replacing the cabinet.
Are these rails TAA and RoHS compliant?▾
Yes. The part is TAA-compliant, USMCA compliant, RoHS compliant and REACH compliant, with country of origin CA and ECCN EAR99.
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