Project Zomboid B42.19 Nails: Where Boxes Spawn, Weight Math, Auto-Open Build

Project Zomboid B42.19: Nails

Loot targets, weight math, auto-open build, barricade vs box.

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# Project Zomboid B42.19 Nails Guide

In **Build 42.19**, nails still exist—they concentrate in hardware loot and often spawn as **Box of Nails** (100 nails). Two common myths reverse the real rules:

1. **Carpentry build recipes already count boxes and open them as needed.** You do not need to manually unbox before every wood wall, floor, or furniture craft that uses nails.
2. **A full box is heavier than the same nails loose.** A Box of Nails weighs **2.0**; 100 loose nails are **20** inventory stack units (5 nails each at **0.05** each) → about **1.0** total.

Use this page for loot targets, weight math, barricade counts, and scrap fallbacks. Jump to [Quick-Start](#quick-start).

<a id="quick-start"></a>
## Quick-Start: The 10-Minute Nail Run (B42.19)

1. ![icon:Nails](/static/images/pz-icons/Nails.png) **Win condition:** one *Box of Nails* for carpentry stock, plus a **small loose stack** if you will barricade windows the same trip.
2. ![icon:Tools](/static/images/pz-icons/Wrench.png) **Hit high-weight hardware first:** tool-store carpentry/misc counters, carpentry crates, carpenter tool piles—not kitchens or bedrooms.
3. ![icon:Loot](/static/images/pz-icons/Backpack.png) **Open hardware containers only:** shelves, crates, toolboxes, back-room storage with tool/carpentry loot.
4. ![icon:Boxes](/static/images/pz-icons/Nails.png) **Take boxes for bulk stock:** one slot holds 100 nails. For **weight**, remember the box is heavier than opening it and carrying loose nails.
5. ![icon:Hammer](/static/images/pz-icons/Hammer.png) **Build vs barricade:** start ordinary carpentry with the box still closed (build auto-opens). Manually open a box when you need loose nails for plank barricades or sheet-rope placement.
6. ![icon:Dismantle](/static/images/pz-icons/Hammer.png) **If loot fails:** scrap wood furniture with the correct tools and skill—output is chance-based, not a free nail factory.

```txt
Nail Run Go-Bag (early B42.19)
- Hammer (barricades + many wood crafts)
- Saw + screwdriver (scrap / dismantle player builds)
- Bag space for boxes or opened nail stacks
- Food + water for one in-game day
- Optional: second bag for planks after the nail stop
```

## Item facts (42.19)

| Item | Weight | Contents / stack | Notes |
| --- | --- | --- | --- |
| Nails | 0.05 | 5 nails per inventory stack unit | Loose units used by barricades and many recipes |
| Box of Nails | **2.0** | 100 nails | Double-click / packing opens to 20 stack units (20×5 = 100) |
| Carton of Nails | 20.0 | 12× Box of Nails | Bulk warehouse-tier haul |

**Weight comparison for 100 nails:** box **2.0** vs loose about **1.0**. Boxing is a **slot and organization** win, not a carry-weight hack.

## Build auto-open vs barricade (do not mix these up)

| Action | Uses closed boxes automatically? | What the game does |
| --- | --- | --- |
| Carpentry / build-menu crafts that need nails | **Yes** | Each closed box counts as **100** nails; if short on loose nails, the game opens one box into 20 nail stack units, then consumes what the craft needs |
| Window/door plank barricade | **No** | Needs **1** loose nail stack unit per plank and a working hammer-type tool; open a box first if you only have boxes |
| Sheet rope | Treat as needing hammer + nails | Keep a few loose nails for escape lines |

```txt
Box discipline (42.19)
- Loot / base storage: keep bulk as boxes (fewer slots)
- Long walk where weight matters: opening boxes can lighten the same 100 nails (2.0 → ~1.0)
- Carpentry session: leave boxes closed; build will open as needed
- Barricade / sheet rope: open only enough for the windows or rope line you will finish now
```

## Where to look first (loot priority)

Numbers below are **relative** box odds for hardware loot tables in 42.19 (higher = more often when that table rolls). Sandbox loot multipliers still scale the world.

| Priority | Location type | Relative box weight | Containers / notes |
| --- | --- | --- | --- |
| S | Tool store carpentry / misc | 30 | Hardware store shelves and counters |
| S | Carpentry crate | 30 | Warehouse / storage carpentry crates; can also roll Carton of Nails |
| A | Carpenter tools, furniture factory tools | 20 | Workshop tool piles |
| B | Construction worker tools, Gigamart tools, janitor tools | 10 | Jobsite and big-box tool aisles |
| B–C | Garage carpentry | 4 | Residential garages with carpentry loot—safer, lower odds than tool stores |
| C | Metal shelves / generic tool boxes | lower | Still better than kitchens; do not farm bedrooms for boxes |

### What to deprioritize for nails

- Kitchens, bedrooms, bathrooms: food and clothes, not boxes of nails.
- Office desks and filing cabinets: almost never a nail run target.
- Wandering without a container type: if you cannot name the stop (tool store, carpentry crate, garage carpentry), you are not hunting nails.

## Barricade math

Build 42.19 plank barricades use one nail for each layer:

- **1 loose nail stack unit per plank** (and a non-broken hammer-type tool).
- Up to **4 planks** per window → **4** nails for a full board-up.

| Job | Nails needed | Notes |
| --- | --- | --- |
| ![icon:Plank](/static/images/pz-icons/Plank.png) 1 plank on 1 window | 1 | First pass on exposed street windows |
| ![icon:Plank](/static/images/pz-icons/Plank.png) 4 planks on 1 window (max) | 4 | Reserve for doors/windows that must hold |
| Sheet rope escape | Hammer + nails | Needs hammer and nails; do not strand yourself one nail short |

Use the planner’s nail calculator for multi-window counts. Remember: **one opened box = 100 nails** → enough for **100** single-plank barricades or **25** four-plank windows if spent only on boards.

## Emergency nails: scrap and dismantle (not guaranteed)

Scrap is **not** “any wood furniture always drops nails.” Results depend on the furniture material, tools, skill, and chance.

### Scrap loop (world furniture)

1. Clear a low-risk house; keep noise down.
2. Enter **scrap / disassemble** mode on furniture that shows wood (or other materials you have tools for).
3. Use the **required tools** shown for that material (wood scrap is Carpentry-gated; many pieces need a hammer or saw—check the panel).
4. Expect **chance-based** returns. Wood scrap can return nails with a per-roll chance and a small max amount—not a fixed payout every piece.
5. Stop when you have enough for the next barricade pass; hauling scrap leftovers is optional.

### Player-built structures

Dismantling your own carpentry (saw + screwdriver on built walls/furniture) returns some of the materials that went into the craft, with **random partial counts**—still not a full refund.

### Goals, not vibes

- **Starter base crafts:** boxes at a tool store / carpentry crate beat scrap farming.
- **Barricades:** open a box once, budget 1 nail per plank, board critical windows first (1 plank), and upgrade later.
- **Late game:** blacksmith can forge nails after you learn the recipes—slower than looting boxes early.

## Troubleshooting

| Symptom | Likely cause | Fix |
| --- | --- | --- |
| “No nails anywhere” | Looting bedrooms/kitchens | Switch to tool-store / carpentry-crate / garage-carpentry containers |
| Build works with only a box, barricade does not | Plank barricade needs 1 loose nail unit per plank | Open the box before boarding |
| Backpack heavier after “keeping boxes” | Box is 2.0 vs ~1.0 loose per 100 | Open boxes when weight, not slots, is the bottleneck |
| Scrap yields planks but few nails | Chance + wrong materials | Raise Carpentry, target wood furniture that can drop nails, or resume loot runs |
| Multiplayer stinginess | Server loot multiplier / custom loot | Check server sandbox; do not assume single-player rates |

## Recap

- Hunt **hardware loot stops**, not house interiors.
- **Build auto-counts and auto-opens** closed boxes; B42.19 plank barricades need **1 loose nail per plank**.
- **Boxes are heavier** than the same nails loose—use boxes for slots/storage, open for weight or barricades.
- Scrap is a **skill- and chance-gated** backup, not a guaranteed nail printer.

## Version notes

<details>
<summary>Build 42 notes relevant to nail hunting</summary>

| Date / line | Note | Practical impact |
| --- | --- | --- |
| 2024-12-17 | Build 42 Unstable launch | Expect loot-feel swings; keep a loot loop + scrap backup |
| Early B42 community reports | “Where are the nails?” | Usually wrong containers, not total removal |
| 42.13 MP unstable line | MP + hotfixes | Re-check recipes and loot after large point releases |
| **42.19** | Item weights, packing, ordinary build auto-open, plank barricade at 1 nail per plank | Follow the tables above until a later revision changes numbers |

</details>

Project Zomboid B42.19 Nails: Where Boxes Spawn, Weight Math, Auto-Open Build

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