Altronix SPACER9 2-3/8 Inch Male/Female Aluminum Standoff Spacers, 4-Pack
Overview
The Altronix SPACER9 is a pack of four 2-3/8 inch (60.3mm) male/female aluminum standoff spacers engineered specifically for mounting circuit boards inside Altronix enclosures and backplanes. If you're wiring up a security power distribution or access control panel and need consistent, repeatable board-to-surface spacing, these are the hardware fasteners to reach for — manufactured to Altronix's own dimensional tolerances and designed to drop right into their enclosure ecosystem. The 0.1875 inch (4.8mm) machine thread is consistent across the set, so installation stays predictable and doesn't require sorting through mixed hardware.
Altronix has long supplied the mounting hardware to support their own product line, and the Altronix hardware catalog covers exactly this kind of purpose-built accessory — not generic fasteners, but components matched to the enclosures and backplanes they produce. That specificity matters when you're commissioning a panel that needs to meet a particular standoff height and thread spec without improvisation on-site.
Key Features
- 2-3/8 Inch (60.3mm) Standoff Height: This length establishes the air gap between a mounted circuit board and the enclosure backplane. At 2.375 inches, you get enough clearance for boards with rear-mounted connectors or heat-generating components that benefit from airflow underneath — a meaningfully larger standoff than the shorter M/F variants used for compact boards in tight enclosures.
- Male/Female Thread Configuration: The M/F design means these spacers can be stacked or terminated depending on the board configuration. The male end threads into a mounting point; the female end accepts a screw to secure the board. This dual-use threading gives you flexibility in single-tier and multi-tier board mounting setups without needing a separate fastener library.
- 0.1875 Inch (4.8mm) Machine Thread: The machine thread spec is the critical matching dimension — it must correspond to the threaded holes in the enclosure or backplane. This 4.8mm thread is consistent with Altronix enclosure hardware standards, so if you're sourcing replacements for an existing Altronix installation, these will match without modification.
- Aluminum Construction: Aluminum standoffs are the appropriate choice for electronics enclosures — they're electrically conductive (relevant when the standoff is part of a grounding path), lighter than steel alternatives, and resistant to the corrosion that can seize a steel fastener after years in a panel. For a product that may need to be removed during servicing years after installation, that matters.
- Quantity 4 Per Pack: A typical circuit board uses four standoffs — one at each corner. A single SPACER9 pack provides exactly what you need to mount one board, which makes per-board procurement straightforward. Need to mount two boards? Order two packs. No guessing about quantities.
- Purpose-Built for Altronix Enclosures and Backplanes: These are listed by Altronix as hardware suitable for mounting circuit boards in all their enclosures and backplanes. That designation means dimensional fit is validated by the manufacturer — you're not adapting a generic standoff and hoping the thread pitch and shoulder diameter clear the mounting points. Explore Altronix power and control products for the enclosures these pair with.
Integration and Compatibility
The SPACER9 is designed for use within the access control and security power enclosure ecosystem. Altronix builds enclosures and backplanes across their Maximal, MaxFit, and Trove product lines, and these standoffs are cataloged as compatible hardware across that range. If you're installing a power distribution board, NAC extender card, or custom circuit board into an Altronix enclosure, SPACER9 provides the correct standoff geometry to do it cleanly.
From a broader integration standpoint, the 0.1875 inch machine thread is a standard dimension — while these are specified for Altronix enclosures, integrators working with matching thread pitch in other commercial panels may find them applicable. That said, verify the thread pitch and standoff height against your specific enclosure specs before ordering for non-Altronix applications. For Altronix enclosure projects specifically, these are a confirmed fit.
For integrators building out complete security power supply installations with Altronix hardware, having a stock of SPACER9 on hand eliminates the field-trip problem — nothing stalls a panel commissioning faster than missing standoffs at a job site. At 0.4 lbs per pack of four, shipping cost is negligible when bundled with a larger Altronix order.
What's in the Box
- 4x Altronix SPACER9 aluminum male/female standoff spacers (2.375 inch / 60.3mm, 0.1875 inch machine thread)
Frequently Asked Questions
Q: What is the standoff length of the SPACER9?
A: The SPACER9 measures 2-3/8 inches (60.3mm) in length. This is the full male/female standoff height — the gap created between the mounting surface and the circuit board when installed.
Q: How many spacers come in a SPACER9 pack?
A: Each SPACER9 order includes four (4) aluminum standoff spacers. This quantity covers a standard four-corner board mounting configuration.
Q: What thread size does the SPACER9 use?
A: The SPACER9 uses a 0.1875 inch (4.8mm) machine thread. Both the male and female ends share this thread specification.
Q: What material are the SPACER9 standoffs made from?
A: The standoffs are constructed from aluminum — electrically conductive, corrosion-resistant, and lighter than steel alternatives, making them well-suited for long-term installation in electronics enclosures.
Q: Are the SPACER9 standoffs compatible with all Altronix enclosures?
A: Altronix lists the SPACER9 as hardware suitable for mounting circuit boards in all their enclosures and backplanes. Confirm the thread pitch and standoff height requirements for your specific enclosure model before ordering for non-Altronix applications.
Q: What is the difference between male/female standoffs and male/male or female/female types?
A: A male/female standoff has a threaded post (male) on one end that threads into the enclosure mounting point, and a threaded hole (female) on the other end that accepts a machine screw to secure the circuit board. This configuration allows the board to be firmly fastened at a fixed height above the enclosure surface.
The SPACER9 is one of those items that seems trivial until it's missing from a kit at a job site. The 2-3/8 inch (60.3mm) male/female aluminum standoff with a 0.1875 inch machine thread is a precision-specific part — swap in a generic standoff with a mismatched shoulder or thread pitch and you're either stripping threads in an Altronix backplane or relying on a board that isn't fully secured. Having SPACER9 on hand in your hardware stock is the right call for any shop running consistent Altronix panel builds.
Technical Highlights:
- 60.3mm Standoff Height: At 2.375 inches, this is a full-depth standoff — appropriate for boards with rear connectors or components that need clearance, not a low-profile spacer for compact installations. Make sure your enclosure has the vertical depth to accommodate it before ordering.
- 0.1875in Machine Thread: This is the load-bearing dimension — it determines whether the SPACER9 threads cleanly into your enclosure's mounting points. Altronix backplanes are machined to this spec; verify before substituting in any non-Altronix enclosure.
- Aluminum Construction, 4-Pack: Aluminum resists seizing over time better than steel fasteners in a sealed panel environment, which matters when you're servicing a system five years post-install. The four-pack matches the corner-mount count of a standard board — no leftover hardware, no shortage.
Deployment Considerations:
- The SPACER9 is cataloged by Altronix as compatible with all their enclosures and backplanes — but the 2.375 inch standoff height is the longer variant in their lineup. Verify that your target enclosure has sufficient depth to allow the board to sit at this height without contacting the enclosure lid or adjacent hardware when closed.
- While aluminum standoffs are generally appropriate for grounded enclosure environments, do not assume they provide an isolated mounting path — aluminum conducts. If your board requires electrically isolated standoffs, a different spacer material (nylon/plastic) is required; SPACER9 is a conductive aluminum part.
For integrators standardizing on Altronix power distribution and NAC extender panels across multi-site commercial security deployments, stocking SPACER9 in your hardware kit prevents avoidable delays when commissioning panels in the field — the 4-pack maps directly to a single-board installation without any surplus or shortage.
